The following code renders a JButton
without text:
public abstract class Test {
public static void main(String... args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException e) {
e.printStackTrace();
}
SwingUtilities.invokeLater(() -> {
JFrame frame = new JFrame();
JPanel panel = new JPanel();
String text = "Invisible";
JButton button = new JButton(text); // blank button rendered ???
System.out.println(button.getText()); // prints Invisible
button.setAction(new AbstractAction() {
@Override
public void actionPerformed(ActionEvent arg0) {
// do nothing
}
});
System.out.println(button.getText()); // prints null ???
button.setFocusable(false);
button.setPreferredSize(new Dimension(100, 40));
panel.add(button);
frame.setResizable(false);
frame.getContentPane().add(panel);
frame.pack();
frame.setVisible(true);
});
}
}
If i remove the call to button.setAction(...)
it renders the button including the text.
Alternatively:
public abstract class Test {
public static void main(String... args) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException e) {
e.printStackTrace();
}
SwingUtilities.invokeLater(() -> {
JFrame frame = new JFrame();
JPanel panel = new JPanel();
String text = "Invisible";
JButton button = null;
button = new JButton(new AbstractAction() {
@Override
public void actionPerformed(ActionEvent arg0) {
// do nothing
}
});
button.setText(text); // renders the button with text
System.out.println(button.getText()); // prints Invisible obviously
button.setFocusable(false);
button.setPreferredSize(new Dimension(100, 40));
panel.add(button);
frame.setResizable(false);
frame.getContentPane().add(panel);
frame.pack();
frame.setVisible(true);
});
}
}
Works fine but has some nasty implications like not being able to change the buttons action without resetting its text after.
Why?!
@Dima Maligin
not an answer, will be deleted
Swing Action should be declared (override isEnabled too, it can be importnant)
.
private class SwingAction extends AbstractAction {
//or public Action SwingAction() {
// return new AbstractAction("Invisible") {
// here to override AbstractAction
// }
// }
public SwingAction() {
putValue(NAME, "Invisible"); // bounds properties
putValue(SHORT_DESCRIPTION, "Invisible");
}
@Override
public void actionPerformed(ActionEvent e) {
// do nothing
}
}
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