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import java.awt.Color;
import java.awt.Component;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
public class Main extends JFrame {
public Main() {
this.setSize(400, 100);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setLayout(new FlowLayout(FlowLayout.CENTER));
JButton button = new JButton("Change Frame Color");
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Component component = (Component) e.getSource();
JFrame frame = (JFrame) SwingUtilities.getRoot(component);
frame.setBackground(Color.RED);
}
});
this.getContentPane().add(button);
}
public static void main(String[] args) {
new Main().setVisible(true);
}
}
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