I'm designing a long and signup page as a test for some java projects and whilst trying to append the JLabel under the existing panel, the text does not show up.
Here is the code:
//Setting Panel Color
int r1 = 172;
int g1 = 50;
int b1 = 50;
Color myFgColor = new Color(r1,g1,b1);
JPanel panel = new JPanel();
panel.setBounds(750,60,375,420);
panel.setBackground(myFgColor);
//Login and Sign Up Text
JLabel label = new JLabel("LOGIN");
label.setFont(new Font("Serif", Font.PLAIN, 14));
label.setForeground(Color.white);
panel.add(label);
gui.getContentPane().add(panel);
Is this what you are trying to see?
window
I didn't change anything, I just created a new JFrame and put your components...
The difference I see is that JFrame creates the contentPane, and you didn't:
private JPanel contentPane;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Window frame = new Window();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
public Window() {
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(1200, 575);
setResizable(false);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
contentPane.setLayout(new BorderLayout(0, 0));
setContentPane(contentPane);
//Setting Panel Color
Color myFgColor = new Color(172,50,50);
JPanel panel = new JPanel();
panel.setBounds(750,60,375,420);
panel.setBackground(myFgColor);
//Login and Sign Up Text
JLabel label = new JLabel("LOGIN");
label.setFont(new Font("Serif", Font.PLAIN, 14));
label.setForeground(Color.white);
panel.add(label);
getContentPane().add(panel);
//Setting Background Color
Color myBgColor = new Color(30,30,30);
getContentPane().setBackground(myBgColor);
//Centering Window
setLocationRelativeTo(null);
}
I recommend you using WindowBuilder to create frames, it's a visual designer and it makes it very easy
Related
I am trying to add a JScrollPane (createTeamScrollPane) to a JPanel (createTeamPanel) that I have. I have a frame, with a BorderLayout with the NORTH portion being used by a JPanel called tabMenu, and then the CENTER portion I would like my 'createTeamPanel' to have this scrolling ability as it will have more content than what I can fit on the screen at once. I am then adding both panels to the frame. Currently the code as is runs but the window appears blank. Once resizing the window, I then see the 3 buttons in the NORTH portion of my frame (why is this happening?) and when I click on 'Create Team' it brings up the list of JLabels and JButtons I expect but I don't see any scrolling bars?
public static void main (String args[]) {
JFrame frame = new JFrame();
frame.setTitle("v0.01");
frame.setSize(800, 800);
//frame.setLayout(null);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel mainPanel = new JPanel();
mainPanel.setLayout(new BorderLayout());
JPanel tabMenu = new JPanel();
JPanel createTeamPanel = new JPanel();
createTeamPanel.setLayout(new BoxLayout(createTeamPanel, BoxLayout.Y_AXIS));
createTeamPanel.setSize(800, 700);
createTeamPanel.setVisible(showCreateTeamPanel);
createTeamPanel.setBackground(Color.gray);
JScrollPane createTeamScrollPane = new JScrollPane(createTeamPanel);
createTeamScrollPane.setBounds(50, 50, 200, 500);
createTeamScrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
createTeamScrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);
createTeamScrollPane.setPreferredSize(new Dimension(500,500));
//createTeamPanel.add(createTeamScrollPane);
List<Player> teamList = MockTeams.initTeam();
int xcoord = 100;
int ycoord = 50;
for(Player player : teamList) {
JLabel label = new JLabel(player.getName());
label.setBounds(xcoord, ycoord, Constants.buttonWidth, Constants.buttonHeight);
JButton addToTeamBtn = new JButton("Add to team");
addToTeamBtn.setBounds(xcoord + 100, ycoord, Constants.buttonWidth, Constants.buttonHeight);
addToTeamBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
myTeam.add(player);
addToTeamBtn.setEnabled(false);
}
});
createTeamPanel.add(label);
//createTeamFrame.add(label);
createTeamPanel.add(addToTeamBtn);
//createTeamFrame.add(addToTeamBtn);
ycoord += 50;
}
JButton createTeamBtn = new JButton("Create Team");
createTeamBtn.setBounds(0,0,150,20);
createTeamBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
//Hide/Show Create team panel
if (!showCreateTeamPanel) {
showCreateTeamPanel = true;
createTeamPanel.setVisible(showCreateTeamPanel);
} else {
showCreateTeamPanel = false;
createTeamPanel.setVisible(showCreateTeamPanel);
}
}
});
JButton manageTeamBtn = new JButton("Team Statistics");
manageTeamBtn.setBounds(100,150,150,40);
JButton resetBtn = new JButton("Reset Season");
resetBtn.setBounds(100,200,150,40);
tabMenu.add(createTeamBtn);
tabMenu.add(manageTeamBtn);
tabMenu.add(resetBtn);
mainPanel.add(tabMenu, BorderLayout.NORTH);
mainPanel.add(createTeamPanel, BorderLayout.CENTER);
frame.add(mainPanel);
}
Expected result is to see a scrolling ability on the createTeamPanel but it is not there.
Fixed: I was able to add the JScrollPane to the mainPanel with:
mainPanel.add(createTeamScrollPane, BorderLayout.CENTER);
This question already has an answer here:
Java aligning components in panels
(1 answer)
Closed 6 years ago.
I add a JTextField to my game in the bottom left corner using a nested BorderLayout inside my main panel's BorderLayout.SOUTH. This works fine, but then when I add a button to go right next to it, my JTextField dissapears. Can someone please help?
import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class BlackjackGUI{
private JFrame frame;
private JPanel panel, panelLeft, panelBottom;
private JButton newGameBtn, dealBtn, hitBtn, standBtn;
private JLabel placeBetLbl, playerMoneyLbl;
private JLabel playerCard1Lbl, playerCard2Lbl, playerCard3Lbl,
playerCard4Lbl, playerCard5Lbl, playerCard6Lbl, playerCard7Lbl;
private JLabel dealerCard1Lbl, dealerCard2Lbl, dealerCard3Lbl, dealerCard4Lbl,
dealerCard5Lbl, dealerCard6Lbl, dealerCard7Lbl;
private JLabel playerCardValueLbl, dealerCardValueLbl;
private JLabel spacer1, spacer2;
private JTextField betInputBox;
public BlackjackGUI(){
createForm();
addTextField();
addButtons();
addLabels();
frame.add(panel);
frame.setVisible(true);
}
public void createForm() {
frame = new JFrame("Blackjack");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(1200,800);
panel = new JPanel();
panel.setLayout(new BorderLayout());
Color c = new Color(0, 100, 0);
panel.setBackground(c);
panelLeft = new JPanel();
Color panelLeftBG = new Color (23, 25, 100);
panelLeft.setBackground(panelLeftBG);
panel.add(panelLeft, BorderLayout.WEST);
panelBottom = new JPanel();
Color panelBottomBG = new Color (56, 12, 10);
panelBottom.setBackground(panelBottomBG);
panelBottom.setLayout(new BorderLayout());
panel.add(panelBottom, BorderLayout.SOUTH);
}
public void addButtons() {
newGameBtn = new JButton("New Game");
panelLeft.add(newGameBtn, BorderLayout.WEST);
newGameBtn.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent event) {
System.exit(0);
}
});
dealBtn = new JButton("Deal");
dealBtn.setPreferredSize(new Dimension (100, 50));
panelBottom.add(dealBtn, BorderLayout.WEST);
newGameBtn.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent event) {
System.exit(0);
}
});
}
public void addTextField() {
betInputBox = new JTextField("£25.00");
betInputBox.setFont(new Font("Gill Sans MT", Font.PLAIN, 35));
betInputBox.setHorizontalAlignment(SwingConstants.RIGHT);
betInputBox.setPreferredSize(new Dimension(175,50));
panelBottom.add(betInputBox, BorderLayout.WEST);
}
public void addLabels() {
placeBetLbl = new JLabel("Place your bets!");
placeBetLbl.setFont(new Font("Gill Sans MT", Font.PLAIN, 35));
panelBottom.add(placeBetLbl);
playerMoneyLbl = new JLabel("£2,500");
playerMoneyLbl.setFont(new Font("Gill Sans MT", Font.PLAIN, 35));
panelBottom.add(playerMoneyLbl, BorderLayout.EAST);
}
public static void main(String[] args) {
new BlackjackGUI();
}
}
Excerpt from the BorderLayout javadoc:
Each region may contain no more than one component, and is identified
by a corresponding constant: NORTH, SOUTH, EAST, WEST, and
CENTER.
Your are first adding the text field and then the button to the same region (WEST), thus button just replaces the text field.
To solve the issue you can use FlowLayout for the panelBottom:
panelBottom.setLayout(new FlowLayout(FlowLayout.LEFT));
I currently have a JFrame to start fullscreen, inside this jframe i have a jpanel, this jpanel includes a vertical scrollpane. Now if i resize my jframe vertically it just kinda removes the bottom part of the jpanel. Is there any way to just shrink the jscrollpane.
im currently using flowlayout for the jframe,
Scrollbar appear automatically when the preferred size of the components added to the scroll pane area greater than the size of the scroll pane.
The FlowLayout will wrap components to a new row, but it always gives the preferred size as the size required to fit the components on a single row, so the preferred height will never change.
To solve this problem you can use the Wrap Layout which simple extend FlowLayout to recalculate the preferred size when wrapping occurs.
The JPanel consists of 3 other panels, a top panel, a scrollpane in the middle and a botpanel. The top and bot panel are just button and checkboxes and stuff
private void initPane() {
createFolderCompPanel();
createBotPanel();
createTopPanel();
createScrollPane();
createTotalPanel();
add(totalPanel);
}
private void createFolderCompPanel() {
//Create folderCompPanel
folderCompPanel = new JPanel();
folderCompPanel.setLayout(new BoxLayout(folderCompPanel, BoxLayout.Y_AXIS));
folderCompPanel.add(Box.createVerticalGlue());
}
private void createTotalPanel() {
//Create TotalPanel
totalPanel = new JPanel();
totalPanel.setLayout(new BoxLayout(totalPanel, BoxLayout.Y_AXIS));
totalPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
totalPanel.add(topPanel);
totalPanel.add(scrollPane);
totalPanel.add(botPanel);
}
private void createScrollPane() {
//Create ScrollPane
scrollPane = new JScrollPane();
scrollPane.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scrollPane.setViewportBorder(BorderFactory.createEtchedBorder());
scrollPane.getVerticalScrollBar().setUnitIncrement(6);
}
private void createBotPanel() {
//Create BotPanel
botPanel = new JPanel();
botPanel.setLayout(new BoxLayout(botPanel, BoxLayout.X_AXIS));
//AddButton
addButton = new JButton("Add");
addButton.setEnabled(false);
addButton.addActionListener(this);
//SaveButton
saveButton = new JButton("Save");
saveButton.setEnabled(false);
saveButton.addActionListener(this);
//CancelButton
cancelButton = new JButton("Cancel");
cancelButton.setEnabled(false);
cancelButton.addActionListener(this);
lblTotalLength = new JLabel("Total Length: " + totalLength);
botPanel.add(Box.createRigidArea(new Dimension(10, 0)));
botPanel.add(addButton);
botPanel.add(Box.createRigidArea(new Dimension(10, 0)));
botPanel.add(lblTotalLength);
botPanel.add(Box.createHorizontalGlue());
botPanel.add(saveButton);
botPanel.add(Box.createRigidArea(new Dimension(10, 0)));
botPanel.add(cancelButton);
botPanel.add(Box.createRigidArea(new Dimension(10, 0)));
}
private void createTopPanel() {
//Create TopPanel
topPanel = new JPanel();
topPanel.setLayout(new BoxLayout(topPanel, BoxLayout.X_AXIS));
//create deletedisplay button
deleteDisplayButton = new JButton("Delete Display");
deleteDisplayButton.addActionListener(this);
deleteDisplayButton.setEnabled(false);
//create displaybox
displayBox = new JComboBox();
displayBox.addActionListener(this);
displayBox.addItem("<None>");
for (String s : connect.getAllDisplays()) {
displayBox.addItem(s);
}
displayBox.setMaximumSize(displayBox.getPreferredSize());
//create newdisplay button
newDisplayButton = new JButton("New Display");
newDisplayButton.addActionListener(this);
topPanel.add(Box.createRigidArea(new Dimension(10, 0)));
topPanel.add(displayBox);
topPanel.add(Box.createHorizontalGlue());
topPanel.add(newDisplayButton);
topPanel.add(Box.createRigidArea(new Dimension(5, 0)));
topPanel.add(deleteDisplayButton);
topPanel.add(Box.createRigidArea(new Dimension(10, 0)));
}
this is the panel i add to the jframe
public GuiConstructor(){
super(APPLICATION_NAME);
this.setExtendedState(JFrame.MAXIMIZED_BOTH);
this.setMinimumSize(new Dimension(630, 600));
setLayout(new FlowLayout(FlowLayout.LEFT));
LoopControlWindow folderSearch = new LoopControlWindow(connect, this);
add(folderSearch);
pack();
setLocationRelativeTo(null);
setResizable(true);
setVisible(true);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
I'm having problem with adding another JPanel to my frame when I'm using combobox.
I want to change the center panel according to the selection in combobox.
I made differehnt panel to all selections but it didn't add to my main panel.
I added the code.
thanks :)
import AllClasses.FlightCompany;
{
public class WorkerDialog extends JFrame {
private JPanel Worker;
private String[] LabelNames = { "Worker Type:", " Worker Name:" };
String [] str = { "Office", "Host",
"Pilot" };
JComboBox<String> ChooseBox = new JComboBox<>(str);
public JPanel MainPanel;
private JPanel [] p= new JPanel[3];
public WorkerDialog(FlightCompany f) {
super("Worker Dialog");
p[0] = new Office_Gui();
p[1] = new Host_Gui();
p[2] = new Pilot_Gui();
Worker = new JPanel(new FlowLayout(FlowLayout.LEFT, 5, 5));
JLabel LabelName = new JLabel(LabelNames[0]);
JLabel LabelName2 = new JLabel(LabelNames[1]);
JTextField fieldBox = new JTextField();
LabelName.setSize(40, 25);
ChooseBox.setPreferredSize(new Dimension(180, 22));
Worker.add(LabelName);
Worker.add(ChooseBox);
Worker.add(LabelName2);
fieldBox.setPreferredSize(new Dimension(180, 22));
Worker.add(fieldBox);
JPanel AddPanel = new JPanel(new GridLayout(2, 1, 1, 1));
AddPanel.add(new JButton("Add"));
AddPanel.add(new JButton("TakeOff"));
MainPanel = new JPanel(new BorderLayout(3, 3));
AddPanel.setPreferredSize(new Dimension(0, 110));
ChooseBox.addItemListener(new ItemListener() {
#Override
public void itemStateChanged(ItemEvent e) {
// TODO Auto-generated method stub
//String str = e.getActionCommand();
String jb = (String) ChooseBox.getSelectedItem();
if (jb.equals("Office")){
MainPanel.add(p[0],BorderLayout.CENTER);
System.out.println("Office");}
}
});
MainPanel.add(Worker, BorderLayout.NORTH);
MainPanel.add(AddPanel, BorderLayout.SOUTH);
add(MainPanel);
//pack();
setSize(560, 300);
setAlwaysOnTop(true);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setResizable(false);
setVisible(true);
What you want to do is use a CardLayout for your mainPanel, that will allow you to easily switch between panels. Then add all your panels to the mainPanel, specifying a name for the panel. That name will go in the combo box. When you want to show a certain panel, just call cardLayout.show(mainPanel, "nameOfPanel")
To learn more about Cardlayout see How to Use CardLayout. You can also see a simple example here
An aside: Use Java naming convention. Variables begin with lower case letters, using camel casing. ie:
ChooseBox → chooseBox
MainPanel → mainPanel
etc.
public class MainMenu extends JFrame {
private JPanel panel,file_list_panel;
private JPanel contentPane;
private JMenuBar menuBar;
private JMenu mnNewMenu1,mnNewMenu2,mnNewMenu3;
private JMenuItem mt1,mt2,mt3;
private JPanel right,left ,bottom;
private JSplitPane spver ,sphor;
private JTabbedPane tabbedPane;
private JLabel label;
private JList<String> list_1;
private JScrollPane jscroll_list;
private DefaultListModel listmodel_1 = new DefaultListModel();
public MainMenu() {
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
setBounds(0,0,screenSize.width, screenSize.height);
setExtendedState(getExtendedState() | JFrame.MAXIMIZED_BOTH);
int intValue = Integer.parseInt( "EEEEEE",16);
Color aColor = new Color( intValue );
UIManager.put("TabbedPane.background", new Color(230, 216, 174));
UIManager.put("TabbedPane.selected", Color.WHITE);
UIManager.put("TabbedPane.contentAreaColor",aColor );
UIManager.put("TabbedPane.focus", Color.WHITE);
setTitle("Main Menu");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//setBounds(100, 100, 848, 680);
//setLocation(10, 10);
setLocationRelativeTo(null); // set jFrame alignment to center
//parent(first) panel
contentPane = new JPanel();
contentPane.setBackground(Color.BLACK);
contentPane.setBorder(new EmptyBorder(2, 2, 2, 2));
setContentPane(contentPane);
contentPane.setLayout(new BorderLayout(0, 0));
//Main Menu BAR
menuBar = new JMenuBar();
menuBar.setFont(new Font("Tekton Pro Ext", Font.PLAIN, 11));
setJMenuBar(menuBar);
//Menu 1
mnNewMenu1 = new JMenu("New menu");
menuBar.add(mnNewMenu1);
//Menu 1 MenuItem 1
mt1 = new JMenuItem("Browse New Project");
mt1.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent arg0) {
BrowseScreen frame = new BrowseScreen();
frame.setVisible(true);
}
});
mnNewMenu1.add(mt1);
//second panel
panel = new JPanel();
contentPane.add(panel, BorderLayout.CENTER);
panel.setLayout(new BorderLayout(0, 0));
spver =new JSplitPane(JSplitPane.VERTICAL_SPLIT);
spver.setDividerLocation(500);
spver.setEnabled(false);
bottom=new JPanel();
sphor =new JSplitPane(JSplitPane.HORIZONTAL_SPLIT);
sphor.setEnabled(false);
spver.setTopComponent(sphor);
spver.setBottomComponent(bottom);
bottom.setLayout(null);
panel.add(spver);
sphor.setDividerLocation(180);
left =new JPanel();
right =new JPanel();
sphor.setRightComponent(right);
right.setLayout(new GridLayout(0, 1, 0, 0));
tabbedPane = new JTabbedPane(JTabbedPane.TOP);
tabbedPane.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
JPanel tab1 = new JPanel();
tabbedPane.addTab("fffa", tab1);
tabbedPane.setMnemonicAt(0, KeyEvent.VK_1);
JPanel tab2 = new JPanel();
tabbedPane.addTab("TAB1", tab2);
tabbedPane.setMnemonicAt(0, KeyEvent.VK_1);
right.add(tabbedPane);
sphor.setLeftComponent(left);
left.setLayout(new BorderLayout(0, 0));
file_list_panel= new JPanel();
file_list_panel.setBackground(Color.BLACK);
file_list_panel.setForeground(Color.WHITE);
label = new JLabel("Java Files of Project");
label.setBackground(Color.BLACK);
label.setForeground(Color.WHITE);
label.setFont(new Font("Garamond", Font.BOLD, 14));
file_list_panel.add(label);
left.add(file_list_panel, BorderLayout.NORTH);
list_1 = new JList<String>(listmodel_1);
jscroll_list = new JScrollPane(list_1);
left.add(jscroll_list, BorderLayout.CENTER);
}
public void setList(Vector<String> files){
listmodel_1.removeAllElements();
list_1.removeAll();
for(int i=0;i<files.size();i++)
listmodel_1. addElement(files.elementAt(i));
list_1.setModel(listmodel_1);
this.invalidate();
this.validate();
this.repaint();
}
}
setList is called from the browse window before it calls setVisible(false);
ie . this methods gets called when the browse window disappears .. it does all the things in method but does not update it in the MainMenu
public void setFileList(){
MainMenu mm= new MainMenu();
mm.setList(java_files);
}
list_1 -JList listmodel_1=DefaultListModel
i've tried to refreshing the frame but does not refresh after adding the new list to the Main Window ...
before JList is updated im browsing the the files in another window then it is set to setVisible(false) then MainMenu gets focused and calls the setList method but its not changing
You're creating a new JList<String> and copying the reference to your instance variable - but you're neither removing the old JList from the frame, nor adding the new one. Just changing the variable won't do that.
Rather than creating a new JList<String>, why don't you just replace the model of the existing one? Remove this line:
list_1=new JList<String>(listmodel_1);
and you may find it just works. (You're already setting the model in the subsequent line...)
Basically, you are creating a new JList and associating your model with it, but this has no effect on the JList that is on the screen
public void setList(Vector<String> files){
// Good...
listmodel_1.removeAllElements();
// Not required, has nothing to do with the items in the list
//list_1.removeAll();
// Good
for(int i=0;i<files.size();i++)
listmodel_1. addElement(files.elementAt(i));
// This here is your problem
//list_1=new JList<String>(listmodel_1);
// Because I have no idea what model list_1 is actually using...
list_1.setModel(listmodel_1);
//list_1.setSelectedIndex(0);
//this.invalidate();
//this.validate();
//this.repaint();
}