Using setExtendedState(javax.swing.JFrame.MAXIMIZED_BOTH); ...?

Question

using setExtendedState(javax.swing.JFrame.MAXIMIZED_BOTH);
JFrame Window will cover windows toolbar.
how to create JFrame，make it max size,don't cover windows toolbar.

Answer 1

import javax.swing.*;
import java.awt.*;
class Testing
  public void buildGUI()
    JFrame f = new JFrame();
    f.setExtendedState(JFrame.MAXIMIZED_BOTH);
    GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
    f.setMaximizedBounds(env.getMaximumWindowBounds());
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.setVisible(true);
  public static void main(String[] args)
    SwingUtilities.invokeLater(new Runnable(){
      public void run(){
        new Testing().buildGUI();
}