import javax.swing.JApplet;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JSplitPane;
public class NestedJSplitPane{
public static void main(String[] a) {
int HORIZSPLIT = JSplitPane.HORIZONTAL_SPLIT;
int VERTSPLIT = JSplitPane.VERTICAL_SPLIT;
boolean continuousLayout = true;
JLabel label1 = new JLabel("a");
JLabel label2 = new JLabel("b");
JLabel label3 = new JLabel("c");
JSplitPane splitPane1 = new JSplitPane(VERTSPLIT, continuousLayout, label1, label2);
splitPane1.setOneTouchExpandable(true);
splitPane1.setDividerSize(2);
splitPane1.setDividerLocation(0.5);
JSplitPane splitPane2 = new JSplitPane(HORIZSPLIT, splitPane1, label3);
splitPane2.setOneTouchExpandable(true);
splitPane2.setDividerLocation(0.4);
splitPane2.setDividerSize(2);
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(splitPane2);
frame.pack();
frame.setVisible(true);
}
}