JOGL + Swing does not initialize properly

JOGL + Swing does not initialize properly - java

I am trying to get JOGL working correctly with Swing. I have used WindowBuilder and hacked it together with a few JOGL examples. It works fine, but there is a problem. When I start the program, it starts with blank window. Even the Swing components do not come up:
Everything starts to work when I move mouse cursor over the window content or another event forces it to redraw - like change of focus, window move, re-size etc.
Here is my code:
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.media.opengl.GL;
import javax.media.opengl.GL2;
import javax.media.opengl.GLAutoDrawable;
import javax.media.opengl.GLCapabilities;
import javax.media.opengl.GLEventListener;
import javax.media.opengl.GLProfile;
import javax.media.opengl.awt.GLJPanel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import com.jogamp.opengl.util.Animator;
public class OpenGLTestMin {
private JFrame frame;
private Animator animator;
private double theta = 0;
private double s = 0;
private double c = 0;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
OpenGLTestMin window = new OpenGLTestMin();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public OpenGLTestMin() {
frame = new JFrame();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent windowevent) {
animator.stop();
frame.dispose();
System.exit(0);
}
});
// frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(640, 480);
GridBagLayout gridBagLayout = new GridBagLayout();
gridBagLayout.columnWidths = new int[]{0, 0};
gridBagLayout.rowHeights = new int[]{0, 0};
gridBagLayout.columnWeights = new double[]{1.0, Double.MIN_VALUE};
gridBagLayout.rowWeights = new double[]{1.0, Double.MIN_VALUE};
frame.getContentPane().setLayout(gridBagLayout);
JPanel panelMain = new JPanel();
panelMain.setBorder(new EmptyBorder(5, 5, 5, 5));
GridBagConstraints gbc_panelMain = new GridBagConstraints();
gbc_panelMain.fill = GridBagConstraints.BOTH;
gbc_panelMain.gridx = 0;
gbc_panelMain.gridy = 0;
frame.getContentPane().add(panelMain, gbc_panelMain);
GridBagLayout gbl_panelMain = new GridBagLayout();
gbl_panelMain.columnWidths = new int[]{0, 0, 0};
gbl_panelMain.rowHeights = new int[]{0, 0};
gbl_panelMain.columnWeights = new double[]{1.0, 0.0, Double.MIN_VALUE};
gbl_panelMain.rowWeights = new double[]{1.0, Double.MIN_VALUE};
panelMain.setLayout(gbl_panelMain);
JPanel panelButton = new JPanel();
GridBagConstraints gbc_panelButton = new GridBagConstraints();
gbc_panelButton.fill = GridBagConstraints.BOTH;
gbc_panelButton.gridx = 1;
gbc_panelButton.gridy = 0;
panelMain.add(panelButton, gbc_panelButton);
GridBagLayout gbl_panelButton = new GridBagLayout();
gbl_panelButton.columnWidths = new int[]{0, 0};
gbl_panelButton.rowHeights = new int[]{0, 0, 0};
gbl_panelButton.columnWeights = new double[]{0.0, Double.MIN_VALUE};
gbl_panelButton.rowWeights = new double[]{0.0, 0.0, Double.MIN_VALUE};
panelButton.setLayout(gbl_panelButton);
JButton btn1 = new JButton("Button 1");
GridBagConstraints gbc_btn1 = new GridBagConstraints();
gbc_btn1.insets = new Insets(0, 0, 5, 0);
gbc_btn1.gridx = 0;
gbc_btn1.gridy = 0;
panelButton.add(btn1, gbc_btn1);
JButton btn2 = new JButton("Button 2");
GridBagConstraints gbc_btn2 = new GridBagConstraints();
gbc_btn2.gridx = 0;
gbc_btn2.gridy = 1;
panelButton.add(btn2, gbc_btn2);
GLProfile glprofile = GLProfile.getDefault();
GLCapabilities glcapabilities = new GLCapabilities(glprofile);
GLJPanel glcanvas = new GLJPanel(glcapabilities);
glcanvas.addGLEventListener(new GLEventListener() {
#Override
public void reshape(GLAutoDrawable glautodrawable, int x, int y, int width, int height) {
}
#Override
public void init(GLAutoDrawable glautodrawable) {
}
#Override
public void dispose(GLAutoDrawable glautodrawable) {
}
#Override
public void display(GLAutoDrawable glautodrawable) {
theta += 0.01;
s = Math.sin(theta);
c = Math.cos(theta);
GL2 gl = glautodrawable.getGL().getGL2();
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
gl.glBegin(GL.GL_TRIANGLES);
gl.glColor3f(1, 0, 0);
gl.glVertex2d(-c, -c);
gl.glColor3f(0, 1, 0);
gl.glVertex2d(0, c);
gl.glColor3f(0, 0, 1);
gl.glVertex2d(s, -s);
gl.glEnd();
}
});
GridBagConstraints gbc_panel = new GridBagConstraints();
gbc_panel.insets = new Insets(0, 0, 0, 5);
gbc_panel.fill = GridBagConstraints.BOTH;
gbc_panel.gridx = 0;
gbc_panel.gridy = 0;
panelMain.add(glcanvas, gbc_panel);
animator = new Animator(glcanvas);
animator.start();
}
}
Any ideas how to fix this? I am on Windows 7.

I have found the solution. GLJPanel should be initialized directly in main method, not in EventQueue. Then it works just fine. Also note that GLCanvas has MUCH better performance than GLJPanel, however sometimes glitches a bit when resizing window.

Related

Trying to use Eclipse WindowBuilder, but ActionLister isn't doing anything

I've tried checking out about 5 different tutorials for WindowBuilder, and while I can get an application window to appear when I test the code, I cannot get the buttons to work. This is the code I've made based on the tutorials I've seen.
package guiTest;
import java.awt.EventQueue;
import javax.swing.JFrame;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import java.awt.GridBagConstraints;
import javax.swing.JLabel;
import java.awt.Insets;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
public class GuiTest {
private JFrame frame;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
GuiTest window = new GuiTest();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public GuiTest() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 450, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GridBagLayout gridBagLayout = new GridBagLayout();
gridBagLayout.columnWidths = new int[]{0, 0, 0, 0, 0, 0, 0, 0};
gridBagLayout.rowHeights = new int[]{0, 0, 0, 0, 0, 0};
gridBagLayout.columnWeights = new double[]{0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE};
gridBagLayout.rowWeights = new double[]{0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE};
frame.getContentPane().setLayout(gridBagLayout);
JButton btnLabelAdd = new JButton("Label Add");
GridBagConstraints gbc_btnLabelAdd = new GridBagConstraints();
gbc_btnLabelAdd.insets = new Insets(0, 0, 5, 0);
gbc_btnLabelAdd.gridx = 6;
gbc_btnLabelAdd.gridy = 1;
frame.getContentPane().add(btnLabelAdd, gbc_btnLabelAdd);
btnLabelAdd.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent evt) {
makeLabel(evt);
}
});
}
private void makeLabel(ActionEvent evt) {
JLabel lblHereLabel = new JLabel("Here Label");
GridBagConstraints gbc_lblHereLabel = new GridBagConstraints();
gbc_lblHereLabel.gridx = 6;
gbc_lblHereLabel.gridy = 4;
frame.getContentPane().add(lblHereLabel, gbc_lblHereLabel);
}
}
Does anyone have any tips to get this to work? Or some example code I could use to make sure the problem is not with Eclipse? I'm assuming here that the button should make the label when the button is left clicked; is that correct?

Your button works fine. You can watch the code jump into makeLabel() in a debugger. You just aren't making the new label visible.
As suggested by #MadProgrammer, once you've added the new label, you can tell the enclosing Container to update itself by calling revalidate(), and then repaint() to have it redraw itself:
private void makeLabel(ActionEvent evt) {
JLabel lblHereLabel = new JLabel("Here Label");
GridBagConstraints gbc_lblHereLabel = new GridBagConstraints();
gbc_lblHereLabel.gridx = 6;
gbc_lblHereLabel.gridy = 4;
frame.getContentPane().add(lblHereLabel, gbc_lblHereLabel);
frame.getContentPane().revalidate();
frame.getContentPane().repaint();
}
Doing this means that you've divorced yourself from needing to access frame directly. This means that you can rewrite your handler to be "frame agnostic", by querying the button that fired the event for the Container it belongs to, and just add the new label to it, like so:
private void makeLabel(ActionEvent evt) {
JLabel lblHereLabel = new JLabel("Here Label");
GridBagConstraints gbc_lblHereLabel = new GridBagConstraints();
gbc_lblHereLabel.gridx = 6;
gbc_lblHereLabel.gridy = 4;
Container displayArea = ((JButton) evt.getSource()).getParent();
displayArea.add(lblHereLabel, gbc_lblHereLabel);
displayArea.revalidate();
displayArea.repaint();
}

JList size in JDialog

I'm following the previous suggestion of adopting a JList and calling setVisibleRowCount() in my JDialog.
I tried to restrict the number of rows to 2; however the dialog is packed into a big, unscrolled JList. I expected it would show only 2 rows and the rest would be reached through scrolling, leaving space for a future third element in the design (the orders list).
Please take a look at the SSCCE.
TestDialog.java
package testdialog;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class TestDialog {
private static void createAndShowGUI() {
JFrame frame = new JFrame("Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JButton button = new JButton("Click me");
button.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
new JDViewCustomer(frame, true).setVisible(true);
}
});
frame.getContentPane().add(button, BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}
CustomerAddress.java
package testdialog;
public class CustomerAddress {
private final String title;
public CustomerAddress(String title) {
this.title = title;
}
public String getTitle() {
return title;
}
}
JDViewCustomer.java
package testdialog;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.GridBagLayout;
import java.util.List;
import java.util.Objects;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import javax.swing.BoxLayout;
import javax.swing.DefaultListModel;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.LineBorder;
public class JDViewCustomer extends javax.swing.JDialog {
private static final long serialVersionUID = 1L;
private final JPanel jPanelCustomerInfo;
private final JPanel jPanelCustomerAddresses;
private final JPanel jPanelCustomerOrders;
private JTextField txtarea_1;
private JPanel panelNomeDoCliente;
private JPanel panelDadosDoCliente;
private JPanel panelAbaixoDeCustomerAddresses;
private JPanel panelTituloEnderecos;
private JPanel panelContendoOsEnderecos;
private JLabel lblEnderecos;
private JPanel panel;
private JScrollPane scrollPane;
private JList<CustomerAddress> jListCustomerAddresses;
public JDViewCustomer(java.awt.Frame parent, boolean modal) {
super(parent, modal);
getContentPane().setLayout(new BoxLayout(getContentPane(), BoxLayout.Y_AXIS));
panel = new JPanel();
getContentPane().add(panel);
/*scrollPane = new JScrollPane(panel);
getContentPane().add(scrollPane);*/
panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
jPanelCustomerInfo = new JPanel();
panel.add(jPanelCustomerInfo);
jPanelCustomerInfo.setBackground(new Color(255, 255, 255));
jPanelCustomerInfo.setBorder(new CompoundBorder(new LineBorder(new Color(0, 0, 0), 1, true), new EmptyBorder(10, 10, 10, 10)));
jPanelCustomerInfo.setLayout(new BoxLayout(jPanelCustomerInfo, BoxLayout.Y_AXIS));
panelNomeDoCliente = new JPanel();
panelNomeDoCliente.setBorder(new CompoundBorder(new LineBorder(new Color(0, 0, 0), 1, true), new EmptyBorder(10, 10, 10, 10)));
panelNomeDoCliente.setBackground(Color.LIGHT_GRAY);
jPanelCustomerInfo.add(panelNomeDoCliente);
GridBagLayout gbl_panelNomeDoCliente = new GridBagLayout();
gbl_panelNomeDoCliente.columnWidths = new int[]{73, 376, 45, 53, 0};
gbl_panelNomeDoCliente.rowHeights = new int[]{31, 0};
gbl_panelNomeDoCliente.columnWeights = new double[]{0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE};
gbl_panelNomeDoCliente.rowWeights = new double[]{0.0, Double.MIN_VALUE};
panelNomeDoCliente.setLayout(gbl_panelNomeDoCliente);
panelDadosDoCliente = new JPanel();
panelDadosDoCliente.setBorder(new CompoundBorder(new LineBorder(new Color(0, 0, 0), 1, true), new EmptyBorder(10, 10, 10, 10)));
panelDadosDoCliente.setBackground(Color.WHITE);
jPanelCustomerInfo.add(panelDadosDoCliente);
GridBagLayout gbl_panelDadosDoCliente = new GridBagLayout();
gbl_panelDadosDoCliente.columnWidths = new int[]{58, 199, 38, 102, 27, 123, 0};
gbl_panelDadosDoCliente.rowHeights = new int[]{0, 14, 0};
gbl_panelDadosDoCliente.columnWeights = new double[]{0.0, 0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE};
gbl_panelDadosDoCliente.rowWeights = new double[]{0.0, 0.0, Double.MIN_VALUE};
panelDadosDoCliente.setLayout(gbl_panelDadosDoCliente);
jPanelCustomerAddresses = new JPanel();
scrollPane = new JScrollPane(jPanelCustomerAddresses);
getContentPane().add(scrollPane);
//panel.add(jPanelCustomerAddresses);
jPanelCustomerAddresses.setBackground(new Color(255, 255, 255));
jPanelCustomerAddresses.setBorder(new CompoundBorder(new LineBorder(new Color(0, 0, 0), 1, true), new EmptyBorder(10, 10, 10, 10)));
jPanelCustomerAddresses.setLayout(new BoxLayout(jPanelCustomerAddresses, BoxLayout.Y_AXIS));
panelAbaixoDeCustomerAddresses = new JPanel();
panelAbaixoDeCustomerAddresses.setBorder(new LineBorder(new Color(0, 0, 0), 1, true));
jPanelCustomerAddresses.add(panelAbaixoDeCustomerAddresses);
panelAbaixoDeCustomerAddresses.setLayout(new BoxLayout(panelAbaixoDeCustomerAddresses, BoxLayout.Y_AXIS));
panelTituloEnderecos = new JPanel();
panelTituloEnderecos.setBorder(new LineBorder(new Color(0, 0, 0), 1, true));
FlowLayout fl_panelTituloEnderecos = (FlowLayout) panelTituloEnderecos.getLayout();
fl_panelTituloEnderecos.setAlignment(FlowLayout.LEFT);
panelTituloEnderecos.setBackground(Color.LIGHT_GRAY);
panelAbaixoDeCustomerAddresses.add(panelTituloEnderecos);
lblEnderecos = new JLabel("Endereço");
panelTituloEnderecos.add(lblEnderecos);
panelContendoOsEnderecos = new JPanel();
panelContendoOsEnderecos.setBorder(new CompoundBorder(new LineBorder(new Color(0, 0, 0), 1, true), new EmptyBorder(10, 10, 10, 10)));
panelContendoOsEnderecos.setBackground(Color.WHITE);
panelAbaixoDeCustomerAddresses.add(panelContendoOsEnderecos);
panelContendoOsEnderecos.setLayout(new BoxLayout(panelContendoOsEnderecos, BoxLayout.Y_AXIS));
jPanelCustomerOrders = new JPanel();
panel.add(jPanelCustomerOrders);
txtarea_1 = new JTextField();
txtarea_1.setText("Área 3");
jPanelCustomerOrders.add(txtarea_1);
txtarea_1.setColumns(10);
initComponents();
pack();
setLocationRelativeTo(parent);
LoadCustomerDataWorker worker = new LoadCustomerDataWorker(this);
ExecutorService singleThreadPool = Executors.newSingleThreadExecutor();
singleThreadPool.execute(worker);
}
public void addCustomerAddresses(List<CustomerAddress> customerAddresses) {
Objects.requireNonNull(customerAddresses);
DefaultListModel<CustomerAddress> listModel = new DefaultListModel<>();
for (CustomerAddress customerAddress : customerAddresses) {
listModel.addElement(customerAddress);
}
jListCustomerAddresses = new JList<>(listModel);
jListCustomerAddresses.setCellRenderer(new PanelIndividualCustomerAddress());
jListCustomerAddresses.setVisibleRowCount(2);
panelContendoOsEnderecos.add(jListCustomerAddresses);
pack();
}
private void initComponents() {
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
setTitle("Ver Cliente");
}
}
LoadCustomerDataWorker.java
package testdialog;
import java.util.ArrayList;
import java.util.List;
import javax.swing.SwingWorker;
import testdialog.JDViewCustomer;
import testdialog.CustomerAddress;
public class LoadCustomerDataWorker extends SwingWorker<Void, Void> {
private final JDViewCustomer dialog;
private List<CustomerAddress> customerAddresses = null;
public LoadCustomerDataWorker(JDViewCustomer dialog) {
this.dialog = dialog;
}
#Override
protected Void doInBackground() throws Exception {
customerAddresses = new ArrayList<>();
customerAddresses.add(new CustomerAddress("1. Casa"));
customerAddresses.add(new CustomerAddress("2. Trabalho"));
customerAddresses.add(new CustomerAddress("3. Casa"));
customerAddresses.add(new CustomerAddress("4. Trabalho"));
return null;
}
#Override
protected void done() {
if (customerAddresses != null && customerAddresses.size() > 0) {
dialog.addCustomerAddresses(customerAddresses);
}
}
}
PanelIndividualCustomerAddress.java
package testdialog;
import java.awt.Color;
import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.BoxLayout;
import javax.swing.JLabel;
import javax.swing.JList;
import javax.swing.JPanel;
import javax.swing.ListCellRenderer;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.LineBorder;
import testdialog.CustomerAddress;
public class PanelIndividualCustomerAddress implements ListCellRenderer<CustomerAddress> {
#Override
public Component getListCellRendererComponent(JList<? extends CustomerAddress> list, CustomerAddress value, int index, boolean isSelected,
boolean cellHasFocus) {
JPanel panelEnderecoIndividual = new JPanel();
panelEnderecoIndividual.setBorder(new CompoundBorder(new LineBorder(new Color(0, 0, 0), 1, true), new EmptyBorder(3, 3, 3, 3)));
panelEnderecoIndividual.setBackground(Color.WHITE);
panelEnderecoIndividual.setLayout(new BoxLayout(panelEnderecoIndividual, BoxLayout.Y_AXIS));
JPanel panelTituloEndereco = new JPanel();
panelTituloEndereco.setBorder(new CompoundBorder(new LineBorder(new Color(0, 0, 0), 1, true), new EmptyBorder(10, 10, 10, 10)));
FlowLayout fl_panelTituloEndereco = (FlowLayout) panelTituloEndereco.getLayout();
fl_panelTituloEndereco.setAlignment(FlowLayout.LEFT);
panelTituloEndereco.setBackground(new Color(220, 220, 220));
panelEnderecoIndividual.add(panelTituloEndereco);
JLabel lblCasa = new JLabel(value.getTitle()); // "Casa"
panelTituloEndereco.add(lblCasa);
JPanel panelDadosDoEndereco = new JPanel();
panelDadosDoEndereco.setBorder(new CompoundBorder(new LineBorder(new Color(0, 0, 0), 1, true), new EmptyBorder(10, 10, 10, 10)));
panelDadosDoEndereco.setBackground(Color.WHITE);
panelEnderecoIndividual.add(panelDadosDoEndereco);
GridBagLayout gbl_panelDadosDoEndereco = new GridBagLayout();
gbl_panelDadosDoEndereco.columnWidths = new int[]{83, 184, 68, 102, 65, 134, 0};
gbl_panelDadosDoEndereco.rowHeights = new int[]{0, 0, 20, 0};
gbl_panelDadosDoEndereco.columnWeights = new double[]{0.0, 0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE};
gbl_panelDadosDoEndereco.rowWeights = new double[]{0.0, 0.0, 0.0, Double.MIN_VALUE};
panelDadosDoEndereco.setLayout(gbl_panelDadosDoEndereco);
JLabel lblEndereco = new JLabel("Endereço:");
lblEndereco.setFont(new Font("Tahoma", Font.BOLD, 11));
GridBagConstraints gbc_lblEndereo = new GridBagConstraints();
gbc_lblEndereo.anchor = GridBagConstraints.WEST;
gbc_lblEndereo.insets = new Insets(0, 0, 5, 5);
gbc_lblEndereo.gridx = 0;
gbc_lblEndereo.gridy = 0;
panelDadosDoEndereco.add(lblEndereco, gbc_lblEndereo);
JLabel lblNomeDaRua = new JLabel("Nome da rua");
GridBagConstraints gbc_lblNomeDaRua = new GridBagConstraints();
gbc_lblNomeDaRua.anchor = GridBagConstraints.WEST;
gbc_lblNomeDaRua.gridwidth = 3;
gbc_lblNomeDaRua.insets = new Insets(0, 0, 5, 5);
gbc_lblNomeDaRua.gridx = 1;
gbc_lblNomeDaRua.gridy = 0;
panelDadosDoEndereco.add(lblNomeDaRua, gbc_lblNomeDaRua);
JLabel lblNumero = new JLabel("Número:");
lblNumero.setFont(new Font("Tahoma", Font.BOLD, 11));
GridBagConstraints gbc_lblNumero = new GridBagConstraints();
gbc_lblNumero.anchor = GridBagConstraints.WEST;
gbc_lblNumero.insets = new Insets(0, 0, 5, 5);
gbc_lblNumero.gridx = 4;
gbc_lblNumero.gridy = 0;
panelDadosDoEndereco.add(lblNumero, gbc_lblNumero);
JLabel lblValorDoNumero = new JLabel("Valor do número");
GridBagConstraints gbc_lblValorDoNumero = new GridBagConstraints();
gbc_lblValorDoNumero.anchor = GridBagConstraints.WEST;
gbc_lblValorDoNumero.insets = new Insets(0, 0, 5, 0);
gbc_lblValorDoNumero.gridx = 5;
gbc_lblValorDoNumero.gridy = 0;
panelDadosDoEndereco.add(lblValorDoNumero, gbc_lblValorDoNumero);
JLabel lblComplemento = new JLabel("Complemento:");
lblComplemento.setFont(new Font("Tahoma", Font.BOLD, 11));
GridBagConstraints gbc_lblComplemento = new GridBagConstraints();
gbc_lblComplemento.anchor = GridBagConstraints.WEST;
gbc_lblComplemento.insets = new Insets(0, 0, 5, 5);
gbc_lblComplemento.gridx = 0;
gbc_lblComplemento.gridy = 1;
panelDadosDoEndereco.add(lblComplemento, gbc_lblComplemento);
JLabel lblTextoDoComplemento = new JLabel("Texto do complemento");
GridBagConstraints gbc_lblTextoDoComplemento = new GridBagConstraints();
gbc_lblTextoDoComplemento.anchor = GridBagConstraints.WEST;
gbc_lblTextoDoComplemento.insets = new Insets(0, 0, 5, 5);
gbc_lblTextoDoComplemento.gridx = 1;
gbc_lblTextoDoComplemento.gridy = 1;
panelDadosDoEndereco.add(lblTextoDoComplemento, gbc_lblTextoDoComplemento);
JLabel lblBairro = new JLabel("Bairro:");
lblBairro.setFont(new Font("Tahoma", Font.BOLD, 11));
GridBagConstraints gbc_lblBairro = new GridBagConstraints();
gbc_lblBairro.anchor = GridBagConstraints.WEST;
gbc_lblBairro.insets = new Insets(0, 0, 5, 5);
gbc_lblBairro.gridx = 2;
gbc_lblBairro.gridy = 1;
panelDadosDoEndereco.add(lblBairro, gbc_lblBairro);
JLabel lblNomeDoBairro = new JLabel("Nome do bairro");
GridBagConstraints gbc_lblNomeDoBairro = new GridBagConstraints();
gbc_lblNomeDoBairro.anchor = GridBagConstraints.WEST;
gbc_lblNomeDoBairro.insets = new Insets(0, 0, 5, 5);
gbc_lblNomeDoBairro.gridx = 3;
gbc_lblNomeDoBairro.gridy = 1;
panelDadosDoEndereco.add(lblNomeDoBairro, gbc_lblNomeDoBairro);
JLabel lblCidade = new JLabel("Cidade:");
lblCidade.setFont(new Font("Tahoma", Font.BOLD, 11));
GridBagConstraints gbc_lblCidade = new GridBagConstraints();
gbc_lblCidade.anchor = GridBagConstraints.WEST;
gbc_lblCidade.insets = new Insets(0, 0, 5, 5);
gbc_lblCidade.gridx = 4;
gbc_lblCidade.gridy = 1;
panelDadosDoEndereco.add(lblCidade, gbc_lblCidade);
JLabel lblNomeDaCidade = new JLabel("Nome da cidade");
GridBagConstraints gbc_lblNomeDaCidade = new GridBagConstraints();
gbc_lblNomeDaCidade.anchor = GridBagConstraints.WEST;
gbc_lblNomeDaCidade.insets = new Insets(0, 0, 5, 0);
gbc_lblNomeDaCidade.gridx = 5;
gbc_lblNomeDaCidade.gridy = 1;
panelDadosDoEndereco.add(lblNomeDaCidade, gbc_lblNomeDaCidade);
JLabel lblCep = new JLabel("CEP:");
lblCep.setFont(new Font("Tahoma", Font.BOLD, 11));
GridBagConstraints gbc_lblCep = new GridBagConstraints();
gbc_lblCep.anchor = GridBagConstraints.WEST;
gbc_lblCep.insets = new Insets(0, 0, 0, 5);
gbc_lblCep.gridx = 0;
gbc_lblCep.gridy = 2;
panelDadosDoEndereco.add(lblCep, gbc_lblCep);
JLabel lblNumeroDoCep = new JLabel("Número do CEP");
GridBagConstraints gbc_lblNumeroDoCep = new GridBagConstraints();
gbc_lblNumeroDoCep.anchor = GridBagConstraints.WEST;
gbc_lblNumeroDoCep.insets = new Insets(0, 0, 0, 5);
gbc_lblNumeroDoCep.gridx = 1;
gbc_lblNumeroDoCep.gridy = 2;
panelDadosDoEndereco.add(lblNumeroDoCep, gbc_lblNumeroDoCep);
JLabel lblPontoRef = new JLabel("Ponto ref.:");
lblPontoRef.setFont(new Font("Tahoma", Font.BOLD, 11));
GridBagConstraints gbc_lblPontoRef = new GridBagConstraints();
gbc_lblPontoRef.anchor = GridBagConstraints.WEST;
gbc_lblPontoRef.insets = new Insets(0, 0, 0, 5);
gbc_lblPontoRef.gridx = 2;
gbc_lblPontoRef.gridy = 2;
panelDadosDoEndereco.add(lblPontoRef, gbc_lblPontoRef);
JLabel lblPertoDeTalLugar = new JLabel("Perto de tal lugar");
GridBagConstraints gbc_lblPertoDeTalLugar = new GridBagConstraints();
gbc_lblPertoDeTalLugar.anchor = GridBagConstraints.WEST;
gbc_lblPertoDeTalLugar.gridwidth = 3;
gbc_lblPertoDeTalLugar.gridx = 3;
gbc_lblPertoDeTalLugar.gridy = 2;
panelDadosDoEndereco.add(lblPertoDeTalLugar, gbc_lblPertoDeTalLugar);
return panelEnderecoIndividual;
}
}

setVisibleRowCount() only works if the JList is the view of a JScrollPane (that is, the main child of the JScrollPane). In your program, the JScrollPane’s view is a JPanel, not a JList.

Variable "userQuestion" does not have a value. I am attempting to access it from another class, but it does not return anything

The class where I declared and set the variable.
The variable userQuestion is being set each time the user activates a button. The purpose is so that it can be used in the next class to reask that question. However, it seems like the userQuestion variable is not being set. Sorry for the messy code, it was made using Window Builder in Eclipse.
https://pastebin.com/azP6SbRa
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JTextField;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.GridBagLayout;
import java.awt.GridBagConstraints;
import java.awt.Insets;
public class createprojecte extends JFrame {
private JPanel contentPane;
private JTextField textField;
private JButton btnWhatIsYour;
private JButton btnWhereDidYour;
private JButton btnWhatWasThe;
private JButton btnWhoIsYour;
private JButton btnWhatIsYour_1;
private JButton btnWhatIsYour_2;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
createprojecte frame = new createprojecte();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
})
;
}
String userQuestion;
public createprojecte() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
GridBagLayout gbl_contentPane = new GridBagLayout();
gbl_contentPane.columnWidths = new int[]{424, 0};
gbl_contentPane.rowHeights = new int[]{20, 0, 0, 0, 0, 0, 0, 0, 0, 0};
gbl_contentPane.columnWeights = new double[]{0.0, Double.MIN_VALUE};
gbl_contentPane.rowWeights = new double[]{0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE};
contentPane.setLayout(gbl_contentPane);
textField = new JTextField();
textField.setText("Choose what security option you want:");
textField.setColumns(10);
GridBagConstraints gbc_textField = new GridBagConstraints();
gbc_textField.insets = new Insets(0, 0, 5, 0);
gbc_textField.anchor = GridBagConstraints.NORTH;
gbc_textField.fill = GridBagConstraints.HORIZONTAL;
gbc_textField.gridx = 0;
gbc_textField.gridy = 0;
contentPane.add(textField, gbc_textField);
btnWhatIsYour = new JButton("What is your mother's maiden name?");
btnWhatIsYour.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
input frame = new input();
frame.setVisible(true);
String userQuestion = "What is your mother's maiden name?";
frame.SetUserQuestion(userQuestion);
}
});
GridBagConstraints gbc_btnWhatIsYour = new GridBagConstraints();
gbc_btnWhatIsYour.insets = new Insets(0, 0, 5, 0);
gbc_btnWhatIsYour.gridx = 0;
gbc_btnWhatIsYour.gridy = 2;
contentPane.add(btnWhatIsYour, gbc_btnWhatIsYour);
btnWhereDidYour = new JButton("Where did your parents meet?");
btnWhereDidYour.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
input frame = new input();
frame.setVisible(true);
String userQuestion = "Where did your parents meet?";
}
});
GridBagConstraints gbc_btnWhereDidYour = new GridBagConstraints();
gbc_btnWhereDidYour.insets = new Insets(0, 0, 5, 0);
gbc_btnWhereDidYour.gridx = 0;
gbc_btnWhereDidYour.gridy = 3;
contentPane.add(btnWhereDidYour, gbc_btnWhereDidYour);
btnWhatWasThe = new JButton("What was the first street you lived on?");
btnWhatWasThe.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
input frame = new input();
frame.setVisible(true);
String userQuestion = "What was the first street you lived on?";
}
});
GridBagConstraints gbc_btnWhatWasThe = new GridBagConstraints();
gbc_btnWhatWasThe.insets = new Insets(0, 0, 5, 0);
gbc_btnWhatWasThe.gridx = 0;
gbc_btnWhatWasThe.gridy = 4;
contentPane.add(btnWhatWasThe, gbc_btnWhatWasThe);
btnWhoIsYour = new JButton("Who is your favorite music group?");
btnWhoIsYour.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
input frame = new input();
frame.setVisible(true);
String userQuestion = "Who is your favorite music group?";
}
});
GridBagConstraints gbc_btnWhoIsYour = new GridBagConstraints();
gbc_btnWhoIsYour.insets = new Insets(0, 0, 5, 0);
gbc_btnWhoIsYour.gridx = 0;
gbc_btnWhoIsYour.gridy = 5;
contentPane.add(btnWhoIsYour, gbc_btnWhoIsYour);
btnWhatIsYour_1 = new JButton("What is your favorite book?");
btnWhatIsYour_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
input frame = new input();
frame.setVisible(true);
String userQuestion = "What is your favorite book?";
}
});
GridBagConstraints gbc_btnWhatIsYour_1 = new GridBagConstraints();
gbc_btnWhatIsYour_1.insets = new Insets(0, 0, 5, 0);
gbc_btnWhatIsYour_1.gridx = 0;
gbc_btnWhatIsYour_1.gridy = 6;
contentPane.add(btnWhatIsYour_1, gbc_btnWhatIsYour_1);
btnWhatIsYour_2 = new JButton("What is your favorite sports team?");
btnWhatIsYour_2.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
input frame = new input();
frame.setVisible(true);
String userQuestion = "What is your favorite sports team?";
}
});
GridBagConstraints gbc_btnWhatIsYour_2 = new GridBagConstraints();
gbc_btnWhatIsYour_2.insets = new Insets(0, 0, 5, 0);
gbc_btnWhatIsYour_2.gridx = 0;
gbc_btnWhatIsYour_2.gridy = 7;
contentPane.add(btnWhatIsYour_2, gbc_btnWhatIsYour_2);
}
}
The class where I am trying to access the variable.
https://pastebin.com/vb6MWeba
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import java.awt.GridBagLayout;
import javax.swing.JTextField;
import java.awt.GridBagConstraints;
import javax.swing.JPasswordField;
import java.awt.Insets;
public class input extends JFrame {
private JTextField txtWhatIsThe;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
input frame = new input();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
String userQuestion;
public void SetUserQuestion(String question)
{
this.userQuestion = question;
}
public input() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
getContentPane().setLayout(null);
GridBagLayout gridBagLayout = new GridBagLayout();
gridBagLayout.columnWidths = new int[]{0, 0};
gridBagLayout.rowHeights = new int[]{0, 0, 0, 0};
gridBagLayout.columnWeights = new double[]{1.0, Double.MIN_VALUE};
gridBagLayout.rowWeights = new double[]{0.0, 0.0, 0.0, Double.MIN_VALUE};
getContentPane().setLayout(gridBagLayout);
txtWhatIsThe = new JTextField();
txtWhatIsThe.setText(userQuestion );
GridBagConstraints gbc_txtWhatIsThe = new GridBagConstraints();
gbc_txtWhatIsThe.insets = new Insets(0, 0, 5, 0);
gbc_txtWhatIsThe.fill = GridBagConstraints.HORIZONTAL;
gbc_txtWhatIsThe.gridx = 0;
gbc_txtWhatIsThe.gridy = 0;
getContentPane().add(txtWhatIsThe, gbc_txtWhatIsThe);
txtWhatIsThe.setColumns(10);
}
}

You are not really setting your questions into the frame in some of your listeners:
btnWhatIsYour_1.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
input frame = new input();
frame.setVisible(true);
String userQuestion = "What is your favorite book?";
// Missing setter
}
});

JLabel and JButton

Basiclly I got 2 calsses, SSPUserInput and SSPViewer.
I want to press a button in SSPUserInput class and change a JLabel name in SSPViewer. It's basically a rock paper scissor game. This is my first time posting here, I'm sorry if I've done something wrong.
package p3;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class SSPUserInput extends JPanel implements ActionListener {
private JPanel panel = new JPanel();
private JButton btnRock = new JButton ("Rock");
private JButton btnScissor = new JButton ("Scissor");
private JButton btnPaper = new JButton ("Paper");
private JButton btnNewGame = new JButton ("New game");
private JButton btnQuit = new JButton ("Quit");
private Font plainSS14 = new Font("SansSerif", Font.PLAIN, 14);
private SSPViewer lblHumanChoice;
private String rock;
private int scissor;
private int paper;
public SSPUserInput(SSPViewer lblHumanChoice) {
this.lblHumanChoice = lblHumanChoice;
}
public SSPUserInput(){
setPreferredSize (new Dimension(400, 200));
setLayout( null);
btnRock.setBounds(20, 50, 100, 35);
btnRock.setFont(plainSS14);
btnRock.addActionListener(this);
btnScissor.setBounds(155, 50, 100, 35);
btnScissor.setFont(plainSS14);
btnScissor.addActionListener(this);
btnPaper.setBounds(290, 50, 100, 35);
btnPaper.setFont(plainSS14);
btnPaper.addActionListener(this);
btnNewGame.setBounds(20, 100, 370, 35);
btnNewGame.setFont(plainSS14);
btnNewGame.addActionListener(this);
btnQuit.setBounds(20, 150, 370, 35);
btnQuit.setFont(plainSS14);
btnQuit.addActionListener(this);
add(btnRock);
add(btnScissor);
add(btnPaper);
add(btnNewGame);
add(btnQuit);
}
// public String getRock() {
// return rock;
// }
public void actionPerformed(ActionEvent e) {
if( e.getSource() == btnRock ) {
JOptionPane.showMessageDialog(null, "Hello world!");
}
else if( e.getSource() == btnScissor){
}
else if( e.getSource() == btnPaper){
}
else if( e.getSource() == btnNewGame){
}
}
}
package p3;
import java.awt.*;
import javax.swing.*;
public class SSPViewer extends JPanel {
private JLabel lblFirst = new JLabel("First to 3!");
private JLabel lblHuman = new JLabel("Human");
private JLabel lblComputer = new JLabel("Computer");
private JLabel lblHumanChoice = new JLabel();
private JLabel lblComputerChoice = new JLabel();
private JLabel lblHumanPoints = new JLabel("0");
private JLabel lblComputerPoints = new JLabel("0");
private SSPUserInput rock;
private SSPUserInput scissor;
private SSPUserInput paper;
public SSPViewer(SSPUserInput rock, SSPUserInput scissor, SSPUserInput paper) {
this.rock = rock;
this.scissor = scissor;
this.paper = paper;
}
public SSPViewer() {
setLayout(null);
setPreferredSize(new Dimension(400, 200));
lblFirst.setBounds(140, 10, 210, 24);
lblFirst.setFont(new Font("Arial", 2, 24));
lblHuman.setBounds(100, 75, 210, 17);
lblHuman.setFont(new Font("Arial", 2, 17));
lblComputer.setBounds(250, 75, 210, 17);
lblComputer.setFont(new Font("Arial", 2, 17));
lblHumanPoints.setBounds(120, 95, 210, 17);
lblHumanPoints.setFont(new Font("Arial", 2, 17));
lblComputerPoints.setBounds(280, 95, 210, 17);
lblComputerPoints.setFont(new Font("Arial", 2, 17));
lblHumanChoice.setBounds(100, 115, 210, 17);
lblHumanChoice.setFont(new Font("Arial", 2, 17));
// lblHuman.setText(rock.getRock());
lblComputerChoice.setBounds(260, 115, 210, 17);
lblComputerChoice.setFont(new Font("Arial", 2, 17));
add(lblFirst);
add(lblHuman);
add(lblComputer);
add(lblHumanPoints);
add(lblComputerPoints);
add(lblHumanChoice);
add(lblComputerChoice);
}
public JLabel getLblHumanChoice() {
return lblHumanChoice;
}
}
package p3;
import javax.swing.*;
public class SSPApp {
public static void main( String[] args ) {
SSPPlayer player = new SSPPlayer();
SSPViewer viewer = new SSPViewer();
SSPController controller = new SSPController();
SSPUserInput userInput = new SSPUserInput();
JFrame frame1 = new JFrame( "SSPViewer" );
frame1.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
frame1.add( viewer );
frame1.pack();
frame1.setVisible( true );
JFrame frame2 = new JFrame( "SSPUserInput" );
frame2.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
frame2.add( userInput );
frame2.pack();
frame2.setVisible( true );
}
}

Basically you need to hold a reference to the 'view' on the 'userInput'. And you already have it.
public ExampleFrame() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new GridLayout(2, 1));
setContentPane(contentPane);
// create a view
SSPViewer sspViewer = new SSPViewer();
contentPane.add(sspViewer);
// pass a reference to the userInput
contentPane.add(new SSPUserInput(sspViewer));
}
on the viewer class, you need to add a method to access the local private components, for example im going to change a text of JLabel :
public class SSPViewer extends JPanel {
// code ...
// setter. lblHuman is a reference here in that class
// to the view class, so all public members are available
public void setTextExample (String s){
this.lblHuman.setText(s);
}
}
Then on the userInput class, you can 'refer' to that property on the other JPanel :
public void actionPerformed(ActionEvent e) {
if (e.getSource() == btnRock) {
JOptionPane.showMessageDialog(null, "Hello world!");
// accessible now
lblHumanChoice.setTextExample("changed from other panel");
} else ...
}

NOTE: I edited the answer.
I've added the codes here. This way when you press ROCK button(for example), it shows its name in the other window. I used JFrame and called the SSPViewer class inside of SSPUserInput class. NOTE: I think you want to call some other classes inside SSPApp(that's why I wrote it) but even if you run SSPUserInput, it still pops up two windows.Now they are somethings like that: enter image description here and like this
SSPUserInput class
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.AbstractButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import java.awt.GridBagConstraints;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class SSPUserInput extends JFrame {
private JPanel contentPane;
JButton PaperButton;
JButton ScissorButton;
JButton rockButton;
SSPViewer viewer = new SSPViewer();
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
SSPUserInput frame = new SSPUserInput();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public SSPUserInput() {
viewer.frame.setVisible(true); //this code is important
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
JPanel panel = new JPanel();
contentPane.add(panel, BorderLayout.CENTER);
GridBagLayout gbl_panel = new GridBagLayout();
gbl_panel.columnWidths = new int[]{0, 0, 0, 0, 0, 0, 0};
gbl_panel.rowHeights = new int[]{0, 0, 93, 9, 19, 0, 0, 0};
gbl_panel.columnWeights = new double[]{0.0, 1.0, 0.0, 1.0, 0.0, 1.0, Double.MIN_VALUE};
gbl_panel.rowWeights = new double[]{0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE};
panel.setLayout(gbl_panel);
rockButton = new JButton("ROCK");
GridBagConstraints gbc_rockButton = new GridBagConstraints();
gbc_rockButton.fill = GridBagConstraints.HORIZONTAL;
gbc_rockButton.insets = new Insets(0, 0, 5, 5);
gbc_rockButton.gridx = 1;
gbc_rockButton.gridy = 3;
panel.add(rockButton, gbc_rockButton);
ScissorButton = new JButton("Scissor");
GridBagConstraints gbc_ScissorButton = new GridBagConstraints();
gbc_ScissorButton.fill = GridBagConstraints.BOTH;
gbc_ScissorButton.insets = new Insets(0, 0, 5, 5);
gbc_ScissorButton.gridx = 3;
gbc_ScissorButton.gridy = 3;
panel.add(ScissorButton, gbc_ScissorButton);
PaperButton = new JButton("PAPER");
GridBagConstraints gbc_PaperButton = new GridBagConstraints();
gbc_PaperButton.fill = GridBagConstraints.HORIZONTAL;
gbc_PaperButton.insets = new Insets(0, 0, 5, 0);
gbc_PaperButton.gridx = 5;
gbc_PaperButton.gridy = 3;
panel.add(PaperButton, gbc_PaperButton);
JButton btnNewGame = new JButton("New Game");
GridBagConstraints gbc_btnNewGame = new GridBagConstraints();
gbc_btnNewGame.fill = GridBagConstraints.HORIZONTAL;
gbc_btnNewGame.insets = new Insets(0, 0, 5, 5);
gbc_btnNewGame.gridx = 3;
gbc_btnNewGame.gridy = 5;
panel.add(btnNewGame, gbc_btnNewGame);
JButton btnQuit = new JButton("Quit");
GridBagConstraints gbc_btnQuit = new GridBagConstraints();
gbc_btnQuit.fill = GridBagConstraints.HORIZONTAL;
gbc_btnQuit.insets = new Insets(0, 0, 0, 5);
gbc_btnQuit.gridx = 3;
gbc_btnQuit.gridy = 6;
panel.add(btnQuit, gbc_btnQuit);
MyListener2 listener = new MyListener2();
rockButton.addActionListener(listener);
ScissorButton.addActionListener(listener);
PaperButton.addActionListener(listener);
}
private class MyListener2 implements ActionListener {
public void mousePressed(ActionEvent e) {
//System.out.println(((JButton) e.getSource()).getText());
//String name = ((JButton) e.getSource()).getText();
}
#Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
System.out.println(((JButton) arg0.getSource()).getText());
String name = ((JButton) arg0.getSource()).getText();
viewer.humanWin.setText(name);
}
}
}
SSPViewer class
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.BorderLayout;
import java.awt.GridBagLayout;
import javax.swing.JLabel;
import java.awt.GridBagConstraints;
import java.awt.Insets;
public class SSPViewer {
JFrame frame;
JLabel humanWin;
JLabel computerWin;
/**
* Launch the application.
*/
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
SSPViewer window = new SSPViewer();
window.frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the application.
*/
public SSPViewer() {
initialize();
}
/**
* Initialize the contents of the frame.
*/
private void initialize() {
frame = new JFrame();
frame.setBounds(100, 100, 450, 300);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel panel = new JPanel();
frame.getContentPane().add(panel, BorderLayout.CENTER);
GridBagLayout gbl_panel = new GridBagLayout();
gbl_panel.columnWidths = new int[]{0, 0, 4, 0, 0, 0, 0, 0, 0};
gbl_panel.rowHeights = new int[]{0, 0, 0, 0, 0, 0, 0, 0};
gbl_panel.columnWeights = new double[]{0.0, 0.0, 1.0, 0.0, 0.0, 1.0, 0.0, 1.0, Double.MIN_VALUE};
gbl_panel.rowWeights = new double[]{0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, Double.MIN_VALUE};
panel.setLayout(gbl_panel);
JLabel lblFirstTo = new JLabel("First to 3!");
GridBagConstraints gbc_lblFirstTo = new GridBagConstraints();
gbc_lblFirstTo.insets = new Insets(0, 0, 5, 5);
gbc_lblFirstTo.gridx = 5;
gbc_lblFirstTo.gridy = 2;
panel.add(lblFirstTo, gbc_lblFirstTo);
JLabel lblHuman = new JLabel("Human");
GridBagConstraints gbc_lblHuman = new GridBagConstraints();
gbc_lblHuman.gridwidth = 3;
gbc_lblHuman.insets = new Insets(0, 0, 5, 5);
gbc_lblHuman.gridx = 2;
gbc_lblHuman.gridy = 4;
panel.add(lblHuman, gbc_lblHuman);
JLabel lblComputer = new JLabel("Computer");
GridBagConstraints gbc_lblComputer = new GridBagConstraints();
gbc_lblComputer.insets = new Insets(0, 0, 5, 0);
gbc_lblComputer.gridx = 7;
gbc_lblComputer.gridy = 4;
panel.add(lblComputer, gbc_lblComputer);
humanWin = new JLabel("");
GridBagConstraints gbc_humanWin = new GridBagConstraints();
gbc_humanWin.insets = new Insets(0, 0, 0, 5);
gbc_humanWin.gridx = 3;
gbc_humanWin.gridy = 6;
panel.add(humanWin, gbc_humanWin);
computerWin = new JLabel("");
GridBagConstraints gbc_computerWin = new GridBagConstraints();
gbc_computerWin.gridx = 7;
gbc_computerWin.gridy = 6;
panel.add(computerWin, gbc_computerWin);
}
}
SSPApp class
public class SSPApp {
SSPUserInput s = new SSPUserInput();
}

Why is my Java swing application misbehaving?

When I try to maximize the window, the orinigal window rendering remains while another maximized window appears making it messy.
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.GridLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.*;
import javax.swing.table.TableColumnModel;
/**
* #author ad *
*/
public class Blotter {
private JFrame topFrame;
private JPanel mainContentPanel;
private JList unsubscribedFields;
private JList subscribedFields;
private JButton butSubscribe;
private JButton butUnsubscribe;
private JButton butApply;
private JButton butOk;
private JButton butCancel;
private JPanel panConfirm;
private JPanel panToggle;
private JPanel panBottom;
private JPanel panLeftList;
private JPanel panRightList;
private JPanel panSubcribe;
private JPanel panUnsubscribe;
/**
* #param args
*/
public Blotter(){
topFrame = new JFrame("Subscription Fields");
mainContentPanel = new JPanel(new BorderLayout());
/*
butSubscribe = new JButton("-->");
butUnsubscribe= new JButton("<--");
butApply = new JButton("Apply");
butOk = new JButton("OK");
butCancel = new JButton("Cancel");*/
createAndBuildGui();
}
public static void main(String[] args) {
// TODO Auto-generated method stub
Blotter b = new Blotter();
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
} catch (Exception e) {
e.printStackTrace();
}
b.createAndBuildGui();
b.fillGUI();
}
private void fillGUI() {
String[] someRow = {"S110","200","100","42","32"};
}
public void createAndBuildGui()
{
panConfirm = new JPanel(new GridLayout(1,3,5,5));
panToggle = new JPanel(new GridBagLayout());
panBottom = new JPanel(new FlowLayout());
butApply = new JButton("Apply");
butOk = new JButton("OK");
butCancel = new JButton("Cancel");
unsubscribedFields = new JList();
subscribedFields = new JList();
butSubscribe = new JButton(">>>");
butUnsubscribe = new JButton("<<<");
panSubcribe = new JPanel(new BorderLayout());
panUnsubscribe = new JPanel(new BorderLayout());
panLeftList = new JPanel(new BorderLayout());
panRightList = new JPanel(new BorderLayout());
// GridBagConstraints(int gridx, int gridy, int gridwidth,
// int gridheight, double weightx, double weighty,
// int anchor, int fill, Insets insets, int ipadx, int ipady)
panLeftList.add(unsubscribedFields, BorderLayout.CENTER);
panRightList.add(subscribedFields, BorderLayout.CENTER);
panSubcribe.add(butSubscribe, BorderLayout.SOUTH);
panUnsubscribe.add(butUnsubscribe, BorderLayout.NORTH);
panToggle.add(panLeftList,
new GridBagConstraints(0, 0, 1, 2, 0.5, 1, GridBagConstraints.CENTER,
GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
panToggle.add(panRightList,
new GridBagConstraints(2, 0, 1, 2, 0.5, 1, GridBagConstraints.CENTER,
GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0));
panToggle.add(panSubcribe,
new GridBagConstraints(1, 0, 1, 1, 0, 0.5, GridBagConstraints.SOUTH,
GridBagConstraints.NONE, new Insets(0, 2, 4, 4), 0, 0));
panToggle.add(panUnsubscribe,
new GridBagConstraints(1, 1, 1, 1, 0, 0.5, GridBagConstraints.NORTH,
GridBagConstraints.NONE, new Insets(0, 2, 4, 4), 0, 0));
// Building bottom OK Apply Cancel panel.
panConfirm.add(butApply, 0);
panConfirm.add(butOk, 1);
panConfirm.add(butCancel, 2);
panBottom = new JPanel(new FlowLayout(FlowLayout.RIGHT));
panBottom.add(panConfirm, BorderLayout.EAST);
// building main content panel
mainContentPanel.add(panToggle,BorderLayout.CENTER);
mainContentPanel.add(panBottom, BorderLayout.SOUTH);
topFrame.add(mainContentPanel);
topFrame.pack();
topFrame.setVisible(true);
topFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
protected void createPriceTable() {
// More fields : "Quantity Done","Quantity Open","PInst","State","Cancel State","Executing System","WaveID","Source System","TraderID","Average Price","LastExecutionPrice","ClientOrderTag","OldQuantityDone"
String[] columnNames = {"OrderId","Account","Symbol","Side","Quantity",};
Object[][] o = new Object[0][columnNames.length];
}
}

You're calling createAndBuildGui() twice: once in main and once in the constructor.
public Blotter(){
topFrame = new JFrame("Subscription Fields");
mainContentPanel = new JPanel(new BorderLayout());
// ...
createAndBuildGui(); <--------
}
public static void main(String[] args) {
Blotter b = new Blotter();
// ...
b.createAndBuildGui(); <--------
b.fillGUI();
}
If you remove one of them, it works just fine.

It depends on layout manager you are using. For example BorderLayout knows to re-render elements when frame size is changed. Unfortunately you did not mention which window works for you and which does not but I saw GridBagLayout in your code. Probably this layout (better to say usage of this layout) prevents similar behavior.

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