Java Swing - 如何组合FlowLayout和GridBagLayout...

import java.awt.BorderLayout;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;

import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;

public class Main {

  public static void main(String[] args) {
    String TITLE = "Full Screen Test";
    JFrame f = new JFrame(TITLE);
    JDesktopPane jdp = new JDesktopPane();

    GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice dev = env.getDefaultScreenDevice();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JInternalFrame jif = new JInternalFrame(TITLE, true, true, true);
    jif.add(new JLabel(TITLE + " " + TITLE), BorderLayout.NORTH);
    jif.add(new JLabel(TITLE + " " + TITLE), BorderLayout.CENTER);
    jif.add(new JLabel(TITLE + " " + TITLE), BorderLayout.SOUTH);
    jif.pack();
    jif.setLocation(100, 100);
    jif.setVisible(true);
    jdp.add(jif);
    f.add(jdp, BorderLayout.CENTER);
    dev.setFullScreenWindow(f);

  }
}