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QuitButtonEx.java
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55 lines (38 loc) · 1.17 KB
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package com.zetcode;
import javax.swing.GroupLayout;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import java.awt.EventQueue;
public class QuitButtonEx extends JFrame {
public QuitButtonEx() {
initUI();
}
private void initUI() {
var quitButton = new JButton("Quit");
quitButton.addActionListener(_ -> System.exit(0));
createLayout(quitButton);
setTitle("Quit button");
setSize(300, 200);
setLocationRelativeTo(null);
setDefaultCloseOperation(EXIT_ON_CLOSE);
}
private void createLayout(JComponent... arg) {
var pane = getContentPane();
var gl = new GroupLayout(pane);
pane.setLayout(gl);
gl.setAutoCreateContainerGaps(true);
gl.setHorizontalGroup(gl.createSequentialGroup()
.addComponent(arg[0])
);
gl.setVerticalGroup(gl.createSequentialGroup()
.addComponent(arg[0])
);
}
public static void main(String[] args) {
EventQueue.invokeLater(() -> {
var ex = new QuitButtonEx();
ex.setVisible(true);
});
}
}