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

public class GettingAndSettingLAF {
	JFrame frame;
	JTextArea txtArea;
	public static void main(String args[]) {
		GettingAndSettingLAF mc = new GettingAndSettingLAF();
	}

	public GettingAndSettingLAF(){
		frame = new JFrame("Change Look");
		UIManager.LookAndFeelInfo lookAndFeels[] = UIManager.getInstalledLookAndFeels();
		JPanel panel = new JPanel();
		JPanel panel1 = new JPanel();
		txtArea = new JTextArea(5, 15);
		JScrollPane sr = new JScrollPane(txtArea);
		panel1.add(sr);
		for(int i = 0; i < lookAndFeels.length; i++){
			JButton button = new JButton(lookAndFeels[i].getName());
			button.addActionListener(new MyAction());
			panel.add(button);
		}
		frame.add(panel1,BorderLayout.NORTH);
		frame.add(panel, BorderLayout.CENTER);
		frame.setSize(300, 200);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setResizable(false);
		frame.setVisible(true);
	}

	public class MyAction implements ActionListener{
		public void actionPerformed(ActionEvent ae){
			Object EventSource = ae.getSource();
			String lookAndFeelClassName = null;
			UIManager.LookAndFeelInfo looks[] = UIManager.getInstalledLookAndFeels();
			for(int i = 0; i < looks.length; i++){
				if(ae.getActionCommand().equals(looks[i].getName())){
					lookAndFeelClassName = looks[i].getClassName();
					break;
				}
			}
			try{
				UIManager.setLookAndFeel(lookAndFeelClassName);
				txtArea.setText(lookAndFeelClassName);
				SwingUtilities.updateComponentTreeUI(frame);
			}
			catch(Exception e){
				JOptionPane.showMessageDialog(frame, "Can't change look and feel:" + lookAndFeelClassName, "Invalid PLAF", JOptionPane.ERROR_MESSAGE);
			}
		}
	}
}