import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.event.*;

public class JSplitPaneTest8 extends JFrame implements ActionListener{

  JSplitPane splitpane;
  JLabel posLabel;

  public static void main(String[] args){
    JSplitPaneTest8 frame = new JSplitPaneTest8();

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setBounds(10, 10, 300, 200);
    frame.setTitle("ƒ^ƒCƒgƒ‹");
    frame.setVisible(true);
  }

  JSplitPaneTest8(){
    splitpane = new JSplitPane();

    JPanel leftPanel = new JPanel();
    JButton leftButton = new JButton("Left");
    leftPanel.add(leftButton);

    JPanel rightPanel = new JPanel();
    JButton rightButton = new JButton("Right");
    rightPanel.add(rightButton);

    splitpane.setLeftComponent(leftPanel);
    splitpane.setRightComponent(rightPanel);

    posLabel = new JLabel("pos:");

    JButton button = new JButton("get");
    button.addActionListener(this);

    JPanel labelPanel = new JPanel();
    labelPanel.add(posLabel);
    labelPanel.add(button);

    getContentPane().add(splitpane, BorderLayout.CENTER);
    getContentPane().add(labelPanel, BorderLayout.PAGE_END);
  }

  public void actionPerformed(ActionEvent e){
    int pos = splitpane.getDividerLocation();
    posLabel.setText("pos:" + pos);
  }