Resize JFrame without flickering

Question

When I try to resize my frame with the setSize() methode it starts
flickering but if i resize with the mouse it works fine.
Is there an other solution to resize a JFrame without flickering?
import java.awt.*;
import javax.swing.*;
public class TestFrame extends JFrame  {
    JPanel panel = new JPanel();
    JButton button = new JButton("Resize");
    public TestFrame() {
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(200,200);
        setLayout(new GridLayout());
        panel.setBackground(Color.red);
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                setSize(getSize().width + 1, getSize().height + 1);
        this.add(button);
        this.add(panel);
    public static void main(String[] args) {
        TestFrame frame = new TestFrame();
        frame.setVisible(true);
}

Answer 1

frame.setUndecorated(true);and implement MouseListener and MouseMotionListener for resizing by mouse dragging on the edge