public class Editor{
public static void main(String[] args) {
JFrame f = new JFrame("Editpr");
f.setLayout(new GridLayout(5, 2, 25, 54));
JButton button1 = new JButton("1");
JButton button1 = new JButton("10");
JTextArea ausgabe = new JTextArea();
ausgabe.setText("Text");
ausgabe.setEditable(false);
f.add(ausgabe);
f.add(button1);
f.add(Button2)
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(550, 550);
f.setVisible(true);
}
I need help with this Code.
I want this is the grid layout in a Border Layout . The buttons to the center. Textarea should be in BorderLayout below. Who can help a newbie.
Here is an example of a panel with GridLayout, at the center of a panel with BorderLayout , and a text area to the south.
Note that I added random buttons to fill the grid, since your GridLayout has 5 rows and 2 columns (You probably planned to add some more components).
public static void main(final String[] args) {
JFrame f = new JFrame("Editpr");
JPanel content = new JPanel();
content.setLayout(new BorderLayout());
JPanel buttonsPanel = new JPanel();
buttonsPanel.setLayout(new GridLayout(5, 2, 25, 54));
JButton button1 = new JButton("1");
JButton button2 = new JButton("2");
buttonsPanel.add(button1);
buttonsPanel.add(button2);
// random filling to demonstrate the result of the filled grid
buttonsPanel.add(new JButton("3"));
buttonsPanel.add(new JButton("4"));
buttonsPanel.add(new JButton("5"));
buttonsPanel.add(new JButton("6"));
buttonsPanel.add(new JButton("7"));
buttonsPanel.add(new JButton("8"));
buttonsPanel.add(new JButton("9"));
buttonsPanel.add(new JButton("10"));
JTextArea ausgabe = new JTextArea();
ausgabe.setText("Text");
ausgabe.setEditable(false);
content.add(buttonsPanel, BorderLayout.CENTER);
content.add(ausgabe, BorderLayout.SOUTH);
f.setContentPane(content);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setSize(550, 550);
f.setVisible(true);
}
Related
I want to align Labels and a Panel (containing Buttons) to the left inside a vertical BoxLayout.
As long as I don't add the panel to the BoxLayout everything is aligned to the left perfectly, but adding it screws everything up.
import javax.swing.*;
import java.awt.*;
public class BoxLayoutDemo{
public static void main(String[] args) {
JFrame frame = new JFrame();
JPanel panel = new JPanel();
JPanel five = new JPanel();
JButton plus = new JButton("+");
JButton minus = new JButton("-");
panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
Font testFont = new Font("Arial", Font.BOLD, 20);
JLabel label1 = new JLabel("Label1");
label1.setFont(testFont);
JLabel label2 = new JLabel("Label2");
label2.setFont(testFont);
five.setLayout(new BoxLayout(five, BoxLayout.X_AXIS));
plus.setMinimumSize(new Dimension(30, 30));
plus.setMaximumSize(new Dimension(30, 30));
minus.setMinimumSize(new Dimension(30, 30));
minus.setMaximumSize(new Dimension(30, 30));
five.add(plus);
five.add(minus);
panel.add(label1);
panel.add(five);
panel.add(label2);
panel.setOpaque(true);
panel.setBackground(Color.red);
frame.setMinimumSize(new Dimension(200, 200));
frame.getContentPane().add(panel, BorderLayout.EAST);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
}
Your components need to have the same "x alignment":
label1.setAlignmentX(Component.LEFT_ALIGNMENT);
label2.setAlignmentX(Component.LEFT_ALIGNMENT);
five.setAlignmentX(Component.LEFT_ALIGNMENT);
Read the section from the Swing tutorial on Fixing Alignment Problems for more information.
You can use invisible components as fillers.
private static Box leftAlignedInHorizontalBox(Component component) {
Box box = Box.createHorizontalBox();
box.add(component);
box.add(Box.createHorizontalGlue());
return box;
}
and then:
panel.add(leftAlignedInHorizontalBox(label1));
I want to add labels and buttons above and below the border layout. How can I do that? Here is what I did:
import java.awt.*;
import javax.swing.*;
class homework{
public static void main(String[] args) {
JFrame frame= new JFrame("border layout");
frame.setVisible(true);
JLabel label=new JLabel("Container of BorderLayout");
JButton button1 = new JButton("NORTH");
JButton button2 = new JButton("SOUTH");
JButton button3 = new JButton("EAST");
JButton button5 = new JButton("CENTER");
JButton button4 = new JButton("WEST");
JPanel panel1=new JPanel();
JPanel panel2=new JPanel();
frame.add(panel2);
label.setLayout(new FlowLayout(0));
panel2.add(label);
panel1.setLayout(new BorderLayout());
panel1.add(button1,BorderLayout.NORTH);
panel1.add(button2,BorderLayout.SOUTH);
panel1.add(button3,BorderLayout.EAST);
panel1.add(button4,BorderLayout.WEST);
panel1.add(button5,BorderLayout.CENTER);
frame.add(panel1);
frame.pack();
}
}
Above and below of border layout, set new 2 containers (for example JPanel) and make them flow layout. enter image description here
JPanel panel = new JPanel();
frame.getContentPane().add(panel, BorderLayout.NORTH);
JRadioButton rdbtnNewRadioButton = new JRadioButton("New radio button");
panel.add(rdbtnNewRadioButton);
JRadioButton rdbtnNewRadioButton_1 = new JRadioButton("New radio button");
panel.add(rdbtnNewRadioButton_1);
JPanel panel_1 = new JPanel();
frame.getContentPane().add(panel_1, BorderLayout.SOUTH);
JLabel lblNewLabel = new JLabel("New label");
panel_1.add(lblNewLabel);
JLabel lblNewLabel_1 = new JLabel("New label");
panel_1.add(lblNewLabel_1);
add something like that before frame.pack(); code.
Actually what do you mean by above and below? Do you mean north and south? If It is you should have something like this enter image description here
and you should write code this way
import java.awt.*;
class homework{
public static void main(String[] args) {
JFrame frame= new JFrame("border layout");
frame.setVisible(true);
JLabel label=new JLabel("Container of BorderLayout");
JButton button3 = new JButton("EAST");
JButton button5 = new JButton("CENTER");
JButton button4 = new JButton("WEST");
JPanel panel1=new JPanel();
JPanel panel2=new JPanel();
frame.getContentPane().add(panel2);
label.setLayout(new FlowLayout(0));
panel2.add(label);
panel1.setLayout(new BorderLayout());
panel1.add(button3,BorderLayout.EAST);
panel1.add(button4,BorderLayout.WEST);
panel1.add(button5,BorderLayout.CENTER);
frame.getContentPane().add(panel1);
JPanel panel = new JPanel();
panel1.add(panel, BorderLayout.NORTH);
JLabel lblNewLabel = new JLabel("New label");
panel.add(lblNewLabel);
JRadioButton rdbtnNewRadioButton = new JRadioButton("New radio button");
panel.add(rdbtnNewRadioButton);
JPanel panel_1 = new JPanel();
panel1.add(panel_1, BorderLayout.SOUTH);
JLabel lblNewLabel_1 = new JLabel("New label");
panel_1.add(lblNewLabel_1);
JRadioButton rdbtnNewRadioButton_1 = new JRadioButton("New radio button");
panel_1.add(rdbtnNewRadioButton_1);
frame.pack();
}
}
In two conditions, you should add two containers into your code and make them flow layout.
I am having trouble adding a scroll pane to a nested panel. Here is what I have:
public class board {
public static void addComponentsToPane(Container pane) {
pane.setLayout(new GridLayout(1, 0));
JPanel left = new JPanel();
pane.add(left);
left.setLayout(new BoxLayout(left, BoxLayout.Y_AXIS));
JPanel leftTop = new JPanel();
leftTop.setPreferredSize(new Dimension(266, 300));
leftTop.setBackground(Color.black);
left.add(leftTop);
JScrollPane scrollPane = new JScrollPane(leftTop); //problem is here
left.add(scrollPane);
JButton jb = new JButton();
jb.setPreferredSize(new Dimension(250,50));
leftTop.add(jb);
JButton jb1 = new JButton();
jb1.setPreferredSize(new Dimension(250,50));
leftTop.add(jb1);
JButton jb2 = new JButton();
jb2.setPreferredSize(new Dimension(250,50));
leftTop.add(jb2);
JButton jb3 = new JButton();
jb3.setPreferredSize(new Dimension(250,50));
leftTop.add(jb3);
JButton jb4 = new JButton();
jb4.setPreferredSize(new Dimension(250,50));
leftTop.add(jb4);
JButton jb5 = new JButton();
jb5.setPreferredSize(new Dimension(250,50));
leftTop.add(jb5);
JButton jb6 = new JButton();
jb6.setPreferredSize(new Dimension(250,50));
leftTop.add(jb6);
JPanel leftBottom = new JPanel();
leftBottom.setPreferredSize(new Dimension(266, 300));
leftBottom.setBackground(Color.red);
left.add(leftBottom);
JPanel middle = new JPanel();
pane.add(middle);
middle.setLayout(new BoxLayout(middle, BoxLayout.Y_AXIS));
JPanel middleTop = new JPanel();
middleTop.setPreferredSize(new Dimension(266, 200));
middleTop.setBackground(Color.green);
middle.add(middleTop);
JPanel middleBottom = new JPanel();
middleBottom.setPreferredSize(new Dimension(266, 400));
middleBottom.setBackground(Color.yellow);
middle.add(middleBottom);
JPanel right = new JPanel();
right.setPreferredSize(new Dimension(266, 600));
right.setBackground(Color.blue);
pane.add(right);
}
private static void createAndShowGUI() {
JFrame frame = new JFrame("GridBagLayoutDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
addComponentsToPane(frame.getContentPane());
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
#Override
public void run() {
createAndShowGUI();
}
});
}
}
I am just messing around with JPanels and I cannot seem to add scrolling to the left top pane. I think i initialized scrollPane right, but am I adding it to the wrong pane?
Your initial problem is here
leftTop.setPreferredSize(new Dimension(266, 300));
This is overriding what the layout manager (FlowLayout in this case) would otherwise provide to the JScrollPane in order for it to know how to manage the view (when to show the scrollbars for instance)
The next problem you will have is, FlowLayout won't do what you want it to. Instead you might want to use GridLayout or maybe GridBagLayout instead
JPanel leftTop = new JPanel(new GridBagLayout());
//leftTop.setPreferredSize(new Dimension(266, 300));
leftTop.setBackground(Color.black);
JScrollPane scrollPane = new JScrollPane(leftTop); //problem is here
left.add(scrollPane);
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.weightx = 1;
gbc.insets = new Insets(5, 10, 5, 10);
JButton jb = new JButton();
jb.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb, gbc);
JButton jb1 = new JButton();
jb1.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb1, gbc);
JButton jb2 = new JButton();
jb2.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb2, gbc);
JButton jb3 = new JButton();
jb3.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb3, gbc);
JButton jb4 = new JButton();
jb4.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb4, gbc);
JButton jb5 = new JButton();
jb5.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb5, gbc);
JButton jb6 = new JButton();
jb6.setPreferredSize(new Dimension(250, 50));
leftTop.add(jb6, gbc);
Know, if that's not meeting your needs, you will need to create a custom component which implements Scrollable, which will allow you to specify PreferredScrollableViewportSize which will tell the JScrollPane what the preferred size of the viewable area should be, rather then using the preferredSize of the view
I want to place two labels in the middle of the center of a window. I get it working with 1 label and the following code:
Screenshot: http://abload.de/img/scr1g6u0f.png
public static void main(String[] args)
{
JFrame contentPane = new JFrame();
contentPane.setBounds(100, 100, 450, 300);
JPanel centerPanel = new JPanel(new BorderLayout());
JLabel label = new JLabel("center1");
centerPanel.add(label, BorderLayout.CENTER);
contentPane.add(centerPanel, BorderLayout.CENTER);
contentPane.setVisible(true);
}
Now I want another label next to the first label. I tried to use a flowlabel, but they are placed at the top of the BorderLayout.CENTER
Screenshot: http://abload.de/img/scr2a3u26.png
public static void main(String[] args)
{
JFrame contentPane = new JFrame();
contentPane.setBounds(100, 100, 450, 300);
JPanel centerPanel = new JPanel(new BorderLayout());
JLabel label1 = new JLabel("center1");
JLabel label2 = new JLabel("center2");
JPanel flowPanel = new JPanel(new FlowLayout());
flowPanel.add(label1);
flowPanel.add(label2);
centerPanel.add(flowPanel, BorderLayout.CENTER);
contentPane.add(centerPanel, BorderLayout.CENTER);
contentPane.setVisible(true);
}
Thanks!
Use a GridBagLayout without constraints:
JPanel centerPanel = new JPanel(new GridBagLayout());
JLabel label1 = new JLabel("center1");
JLabel label2 = new JLabel("center2");
JPanel flowPanel = new JPanel(new FlowLayout());
flowPanel.add(label1);
flowPanel.add(label2);
centerPanel.add(flowPanel);
I have a jFrame with 2 jTables (inserted in 2 jScrollPanes). Then, I have 3 jButtons for each jTable. How can I place them to have the following result:
I don't know very well what Layout to use to manage it.
Thanks!
I have this, but I can't see the buttons:
JButton addButton1 = new JButton();
JButton deleteButton1 = new JButton();
JButton playButton1 = new JButton();
JButton addButton2 = new JButton();
JButton deleteButton2 = new JButton();
JButton playButton2 = new JButton();
JFrame frame = new JFrame();
frame.setLayout(new GridLayout(1, 2));
JPanel panel1 = new JPanel();
panel1.setLayout(new FlowLayout());
panel1.setBorder(javax.swing.BorderFactory.createTitledBorder("List 1"));
JPanel panel2 = new JPanel();
panel2.setLayout(new FlowLayout());
panel2.setBorder(javax.swing.BorderFactory.createTitledBorder("List 2"));
JPanel panel3 = new JPanel();
panel3.setLayout(new FlowLayout());
panel3.add(addButton1);
panel3.add(deleteButton1);
panel3.add(playButton1);
JPanel panel4 = new JPanel();
panel4.setLayout(new FlowLayout());
panel4.add(addButton2);
panel4.add(deleteButton2);
panel4.add(playButton2);
JScrollPane tableContainer1 = new JScrollPane(table1);
panel1.add(tableContainer1, BorderLayout.CENTER);
JScrollPane tableContainer2 = new JScrollPane(table2);
panel2.add(tableContainer2, BorderLayout.CENTER);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new FlowLayout());
frame.getContentPane().add(panel1);
frame.getContentPane().add(panel2);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
Edit: Gah! Someone beat me to it...Here's a slightly different approach regardless!
There's many ways to do this, but I would try the following:
JFrame > BoxLayout using X_AXIS
JPanel #1 > BorderLayout
[BorderLayout.NORTH] JPanel for buttons > FlowLayout using FlowLayout.LEFT
[BorderLayout.CENTER] JScrollPane with Table #1
JPanel #2 > BorderLayout
[BorderLayout.NORTH] JPanel for buttons > FlowLayout using FlowLayout.LEFT
[BorderLayout.CENTER] JScrollPane with Table #2
Using BoxLayout and BorderLayout.CENTER will ensure that the tables resize with the frame and fill up as much space as they can.
Here's a simple example:
public class TwoTableJFrameTest extends JFrame
{
public TwoTableJFrameTest()
{
setTitle("Two Table Layout");
setLayout(new BoxLayout(getContentPane(), BoxLayout.X_AXIS));
JPanel table1Panel = new JPanel(new BorderLayout(5, 5));
JPanel table1ButtonPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
table1ButtonPanel.add(new JButton("Button 1"));
table1ButtonPanel.add(new JButton("Button 2"));
table1ButtonPanel.add(new JButton("Button 3"));
JTable table1 = new JTable(new DefaultTableModel(new Object[]{"Column 1", "Column 2"}, 10));
table1Panel.add(table1ButtonPanel, BorderLayout.NORTH);
table1Panel.add(new JScrollPane(table1));
JPanel table2Panel = new JPanel(new BorderLayout(5, 5));
JPanel table2ButtonPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
table2ButtonPanel.add(new JButton("Button 1"));
table2ButtonPanel.add(new JButton("Button 2"));
table2ButtonPanel.add(new JButton("Button 3"));
JTable table2 = new JTable(new DefaultTableModel(new Object[]{"Column 1", "Column 2"}, 10));
table2Panel.add(table2ButtonPanel, BorderLayout.NORTH);
table2Panel.add(new JScrollPane(table2));
add(table1Panel);
add(table2Panel);
pack();
}
}
Steps:
Give the main JFrame a GridLayout that has two columns and one row.
Add to this JFrame 2 JPanels.
These 2 panels will each have a FlowLayout Y-Axis BoxLayout.
Add to each of these 2 panels a JPanel that holds your 3 buttons.
Add the table to each of the 2 panels.
This is why you couldn't see the buttons, you forgot to do this:
panel1.add(panel3);
panel2.add(panel4);
Anyway, here's the working code:
JButton addButton1 = new JButton();
JButton deleteButton1 = new JButton();
JButton playButton1 = new JButton();
JButton addButton2 = new JButton();
JButton deleteButton2 = new JButton();
JButton playButton2 = new JButton();
JFrame frame = new JFrame();
frame.setLayout(new GridLayout(1, 2));
JPanel panel1 = new JPanel();
panel1.setLayout(new BoxLayout(panel1, BoxLayout.Y_AXIS));
panel1.setBorder(javax.swing.BorderFactory.createTitledBorder("List 1"));
JPanel panel2 = new JPanel();
panel2.setLayout(new BoxLayout(panel2, BoxLayout.Y_AXIS));
panel2.setBorder(javax.swing.BorderFactory.createTitledBorder("List 2"));
JPanel panel3 = new JPanel();
panel3.setLayout(new FlowLayout());
panel3.add(addButton1);
panel3.add(deleteButton1);
panel3.add(playButton1);
JPanel panel4 = new JPanel();
panel4.setLayout(new FlowLayout());
panel4.add(addButton2);
panel4.add(deleteButton2);
panel4.add(playButton2);
panel1.add(panel3);
panel2.add(panel4);
JScrollPane tableContainer1 = new JScrollPane(table1);
panel1.add(tableContainer1, BorderLayout.CENTER);
JScrollPane tableContainer2 = new JScrollPane(table2);
panel2.add(tableContainer2, BorderLayout.CENTER);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new FlowLayout());
frame.getContentPane().add(panel1);
frame.getContentPane().add(panel2);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
P.S.
You'll notice I changed the layout of panel1 & panel2 from FlowLayout to a Y-Axis BoxLayout. This is because the buttons appeared beside the tables, not above. Changing the layout to a Y-Axis BoxLayout fixed that.