import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.*;
import java.util.Vector;

public class UIManagerTest3 extends JFrame implements ActionListener{

  public static void main(String[] args){
    UIManagerTest3 frame = new UIManagerTest3();

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setBounds(10, 10, 450, 300);
    frame.setTitle("ƒ^ƒCƒgƒ‹");
    frame.setVisible(true);
  }

  UIManagerTest3(){

    JButton btn1 = new JButton("Metal");
    JButton btn2 = new JButton("CDE/Motif");
    JButton btn3 = new JButton("Windows");
    JButton btn4 = new JButton("WindowsClassic");

    btn1.addActionListener(this);
    btn1.setActionCommand("javax.swing.plaf.metal.MetalLookAndFeel");
    btn2.addActionListener(this);
    btn2.setActionCommand("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
    btn3.addActionListener(this);
    btn3.setActionCommand("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    btn4.addActionListener(this);
    btn4.setActionCommand("com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel");

    JPanel buttonPanel = new JPanel();
    buttonPanel.add(btn1);
    buttonPanel.add(btn2);
    buttonPanel.add(btn3);
    buttonPanel.add(btn4);

    String[] listData = {"Blue", "Green", "Red", "Whit", "Black", "Yellow"};
    JList list = new JList(listData);
    JScrollPane scrollPane1 = new JScrollPane();
    scrollPane1.getViewport().setView(list);
    scrollPane1.setPreferredSize(new Dimension(200, 80));

    JPanel listPanel = new JPanel();
    listPanel.add(scrollPane1);

    JCheckBox checkBox1 = new JCheckBox("JCheckBox1");
    JCheckBox checkBox2 = new JCheckBox("JCheckBox2", true);

    JPanel checkPanel = new JPanel();
    checkPanel.add(checkBox1);
    checkPanel.add(checkBox2);

    Vector<String> vector = new Vector<String>();
    for (int i = 0 ; i < 10 ; i++){
      StringBuffer sb = new StringBuffer();
      sb.append("JTree Node");
      sb.append(i);
      vector.add(new String(sb));
    }

    JTree tree = new JTree(vector);
    tree.setRootVisible(true);
    JScrollPane scrollPane2 = new JScrollPane();
    scrollPane2.getViewport().setView(tree);
    scrollPane2.setPreferredSize(new Dimension(200, 80));

    JPanel treePanel = new JPanel();
    treePanel.add(scrollPane2);

    JPanel p = new JPanel();
    p.setLayout(new BoxLayout(p, BoxLayout.Y_AXIS));
    p.add(listPanel);
    p.add(checkPanel);
    p.add(treePanel);

    getContentPane().add(p, BorderLayout.CENTER);
    getContentPane().add(buttonPanel, BorderLayout.PAGE_END);
  }

  public void actionPerformed(ActionEvent e){
    String lafClassName = e.getActionCommand();

    try{
      UIManager.setLookAndFeel(lafClassName);
      SwingUtilities.updateComponentTreeUI(this);
    }catch(Exception ex){
      System.out.println("Error L&F Setting");
    }
  }