Looking at the screen short
how do i add the Steps and Choose project
is it a jabel or a title in the panel
This would be done by utilising the Border API available within the Swing. Take a closer look at How to use borders for more details.
As a very rough example...
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.Font;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.CompoundBorder;
import javax.swing.border.EmptyBorder;
import javax.swing.border.MatteBorder;
public class PanelTitles {
public static void main(String[] args) {
new PanelTitles();
}
public PanelTitles() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new TitlePane(), BorderLayout.NORTH);
frame.add(new JLabel("This is the content"));
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TitlePane extends JPanel {
public TitlePane() {
setLayout(new BorderLayout());
setBorder(new CompoundBorder(new EmptyBorder(4, 4, 4, 4), new MatteBorder(0, 0, 1, 0, Color.BLACK)));
JLabel label = new JLabel("This is a title");
label.setFont(label.getFont().deriveFont(Font.BOLD));
add(label);
}
}
}
Related
With all the different 'containers' I'm using, it's hard to set my window size in the code. I guess I need them but at the same time need to find a way to change settings around it.
I've tried doing frame.setSize(int x, int y), did not work.
import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TweetProgram1{
public static void main(String[] args) {
new TweetProgram1();
}
public TweetProgram1() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Tweet Program");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TweetProgram1Pane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TweetProgram1Pane extends JPanel {
public TweetProgram1Pane() {
setLayout(new GridBagLayout());
JLabel lbl = new JLabel("Random tweet");
JButton btn = new JButton("Send it");
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = 300;
gbc.gridheight = 300;
add(lbl, gbc);
add(btn, gbc);
}
}
}
I expect to be able to re-scale the window size (in the code) to whatever I need it to be.
Thanks
I have three radio buttons in one button group. I want, on JButton click, for the radio buttons to be reset so they're unfilled. I've tried the logical suggestions that come up with you type .set and all of the booleans didn't do what I wanted it to do. So if you have suggestions that would be greatly appreciated. Thanks!
Simply use ButtonGroup#clearSelection
For example...
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Action;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Test {
public static void main(String[] args) {
new Test();
}
public Test() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
private JRadioButton[] buttons;
private ButtonGroup buttonGroup;
public TestPane() {
buttons = new JRadioButton[] {
new JRadioButton("Nuclear"),
new JRadioButton("Gas"),
new JRadioButton("Stream"),
new JRadioButton("Peddle"),
new JRadioButton("Electric")
};
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
gbc.gridwidth = GridBagConstraints.REMAINDER;
buttonGroup = new ButtonGroup();
for (JRadioButton btn : buttons) {
add(btn, gbc);
buttonGroup.add(btn);
}
JButton clear = new JButton("Clear");
add(clear, gbc);
clear.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
buttonGroup.clearSelection();
}
});
}
}
}
package swingtraining;
import static java.awt.Color.BLACK;
import static java.awt.Color.RED;
import java.awt.EventQueue;
import static java.awt.Font.BOLD;
import java.awt.Point;
import java.awt.Rectangle;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JButton;
public class JFrameWithAButton extends JFrame {
public JFrameWithAButton(){
setSize(400,400);
setTitle("Swing is hard");
setLocationRelativeTo(null);
setDefaultCloseOperation(EXIT_ON_CLOSE);
setVisible(true);
}
public static void main(String args[]){
JPanel Jp1 = new JPanel();
Jp1.setOpaque(true);
Jp1.setBackground(RED);
JButton Jbt = new JButton();
Jbt.setLayout(null);
Jbt.setSize(200,200);
Jbt.setBounds(new Rectangle(new Point(200, 200)));
Jbt.setText("Hello!");
EventQueue.invokeLater(new Runnable(){
public void run(){
JFrameWithAButton ex = new JFrameWithAButton();
ex.setVisible(true);
ex.add(Jp1);
Jp1.add(Jbt);
}
});
}
}
Sorry if the code's a bit mom's spaghetti-esque, but I just can't crack this cookie >.> Even with layout set to null it doesn't move. Any suggestions of how I get this JButton to not only move to the middle of the window but also grow 200 by 200 pixels?
Any suggestions of how I get this JButton to not only move to the middle of the window but also grow 200 by 200 pixels?
I can think of a few, none of which use null layouts
GridBagConstraints
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Test {
public static void main(String[] args) {
new Test();
}
public Test() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.ipadx = 200;
gbc.ipady = 200;
add(new JButton("Hello"), gbc);
}
#Override
public Dimension getPreferredSize() {
return new Dimension(400, 400);
}
}
}
JButton#setMargin
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class Test {
public static void main(String[] args) {
new Test();
}
public Test() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
JButton btn = new JButton("Hello");
btn.setMargin(new Insets(100, 100, 100, 100));
add(btn);
}
#Override
public Dimension getPreferredSize() {
return new Dimension(400, 400);
}
}
}
EmptyBorder
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.EmptyBorder;
public class Test {
public static void main(String[] args) {
new Test();
}
public Test() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setLayout(new BorderLayout());
setBorder(new EmptyBorder(50, 50, 50, 50));
JButton btn = new JButton("Hello");
add(btn);
}
#Override
public Dimension getPreferredSize() {
return new Dimension(400, 400);
}
}
}
You could use combination of them, maybe using an EmptyBorder and GridBagConstraints to further constrain the layout.
The great benefit of these examples, is, for the most part, if the font size changes or the rendering requirements for the fonts change, the layout is capable of compensating
Avoid using null layouts, pixel perfect layouts are an illusion within modern ui design. There are too many factors which affect the individual size of components, none of which you can control. Swing was designed to work with layout managers at the core, discarding these will lead to no end of issues and problems that you will spend more and more time trying to rectify
And because it's always a fun read, Why is it frowned upon to use a null layout in SWING?
if you wanna define any component size manually you have to set the mother component's layout: null
so you have to set Jframe layout null to define Jpanel size and location
then you have to set JPanel layout null to define Jbutton size and location in it
final JPanel Jp1 = new JPanel();
Jp1.setOpaque(true);
Jp1.setBackground(RED);
Jp1.setLayout(null);
final JButton Jbt = new JButton();
// Jbt.setLayout(null); not needed!
Jbt.setBounds(10, 10, 100, 40);
// Jbt.setBounds(new Rectangle(new Point(200, 200))); not in this style
Jbt.setText("Hello!");
Jp1.add(Jbt);
EventQueue.invokeLater(new Runnable() {
public void run() {
JFrameWithAButton ex = new JFrameWithAButton();
ex.setVisible(true);
ex.add(Jp1);
}
});
don't forget to define size and location both when you are adding a component in a null layout Jpanel or Jframe and ...
I have tried multiple solutions but nothing fits me!
I want to align everything vertically on the center of the frame.
window=new JFrame();
window.setSize(520, 380);
window.setTitle("Menu");
window.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
window.setLayout(new FlowLayout());
label=new JLabel("Settings",JLabel.CENTER);
controlPanel= new JPanel();
controlPanel.setLayout(new GridLayout(10,1));
controlPanel.add(button1);//these are example components
controlPanel.add(button2);
controlPanel.add(button3);
window.add(label);
window.add(controlPanel);
window.setVisible(true);
I want to have as a title the word "Settings" and exactly underneath it my components.
I was able to do this with a gridLayout instead of FlowLayout but the title occupies half of the screen(and i dont want that).
sorry for a basic question like that but i am new to java :)
You could use GridBagLayout, for example...
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.border.EmptyBorder;
public class TestLayout {
public static void main(String[] args) {
new TestLayout();
}
public TestLayout() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
setBorder(new EmptyBorder(50, 50, 50, 50));
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridwidth = GridBagConstraints.REMAINDER;
gbc.fill = GridBagConstraints.HORIZONTAL;
add(new JButton("Apples"), gbc);
add(new JButton("Pears"), gbc);
add(new JButton("Organges"), gbc);
add(new JButton("Grapes"), gbc);
}
}
}
Remember, with it's flexibility, comes complexity. Have a look at How to Use GridBagLayout for more details
jTextPane1.selectAll();
With the correctly shared events, that command permit to highlight the text in a JTextPane area (I am a bit rusty, I need to not forget to share the "good event focus priorities" ; thank you to : MadProgrammer)
Since selectAll is a method of JTextComponent, which JTextPane extends from I would take a wild guess and say, probably, yes.
Five minutes of coding probably would have gotten you the same answer yourself...
Highlighting not seem to appear in the jTextPane area (note : I use Java 7)
This is likely because the JTextPane doesn't have focus, try using requestFocusInWindow to bring keyboard focus back to the JTextPane.
The JTextComponents don't always render selection highlighting when they don't have focus.
For example...
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TestTextPane {
public static void main(String[] args) {
new TestTextPane();
}
public TestTextPane() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
final JTextPane tp = new JTextPane();
JButton withFocus = new JButton("Select with focus");
withFocus.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
tp.selectAll();
tp.requestFocus();
}
});
JButton withOutFocus = new JButton("Select without focus");
withFocus.addActionListener(new ActionListener() {
#Override
public void actionPerformed(ActionEvent e) {
tp.selectAll();
}
});
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new JScrollPane(tp));
JPanel panel = new JPanel();
panel.add(withFocus);
panel.add(withOutFocus);
frame.add(panel, BorderLayout.SOUTH);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}
You could also test it by using
textPane.selectAll();
System.out.println(textPane.getSelectedText());
For example...
And now with double clicking
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TestTextPane {
public static void main(String[] args) {
new TestTextPane();
}
public TestTextPane() {
EventQueue.invokeLater(new Runnable() {
#Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
final JTextPane tp = new JTextPane();
JButton withFocus = new JButton("Select with focus");
tp.addMouseListener(new MouseAdapter() {
#Override
public void mouseClicked(MouseEvent e) {
if (e.getClickCount() == 2 && SwingUtilities.isLeftMouseButton(e)) {
tp.selectAll();
}
}
});
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new JScrollPane(tp));
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}