Membuat Hide/UnHide Menu di Java

menuHideUnHide.java

package newbieilmuDemo;

import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.border.TitledBorder;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.ImageIcon;
import javax.swing.border.LineBorder;
import java.awt.Color;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.SwingConstants;
import javax.swing.JLabel;
import javax.swing.UIManager;
import com.jtattoo.plaf.fast.FastLookAndFeel;



//@Anugrah Bagus Susilo

public class menuHideUnHide extends JFrame {

	private JPanel contentPane;

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					UIManager.setLookAndFeel(new FastLookAndFeel());
					menuHideUnHide frame = new menuHideUnHide();
					frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the frame.
	 */
	public menuHideUnHide() {
		setTitle("::Sistem Informasi Sekolah::");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(100, 100, 776, 434);
		contentPane = new JPanel();
		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
		setContentPane(contentPane);
		contentPane.setLayout(null);
		
		JPanel panelUtama = new JPanel();
		panelUtama.setBorder(new TitledBorder(null, "::Panel Utama::", TitledBorder.LEADING, TitledBorder.TOP, null, null));
		panelUtama.setBounds(12, 12, 164, 379);
		contentPane.add(panelUtama);
		panelUtama.setLayout(null);
		
		final JPanel panelMnuMaster = new JPanel();
		panelMnuMaster.setBounds(12, 45, 140, 115);
		panelUtama.add(panelMnuMaster);
		panelMnuMaster.setLayout(null);
		
		JButton btnMasterSiswa = new JButton("Master Siswa");
		btnMasterSiswa.setMnemonic('M');
		btnMasterSiswa.setHorizontalAlignment(SwingConstants.LEFT);
		btnMasterSiswa.setIcon(new ImageIcon("/home/newbieilmu/workspace/app.newbieilmu/src/icon/anggota.png"));
		btnMasterSiswa.setBounds(0, 0, 140, 30);
		panelMnuMaster.add(btnMasterSiswa);
		
		JButton btnMasterGuru = new JButton("Master Guru");
		btnMasterGuru.setMnemonic('M');
		btnMasterGuru.setHorizontalAlignment(SwingConstants.LEFT);
		btnMasterGuru.setIcon(new ImageIcon("/home/newbieilmu/workspace/app.newbieilmu/src/icon/customers.png"));
		btnMasterGuru.setBounds(0, 26, 140, 30);
		panelMnuMaster.add(btnMasterGuru);
		
		JButton btnMasterMatpel = new JButton("Master MatPel");
		btnMasterMatpel.setMnemonic('M');
		btnMasterMatpel.setHorizontalAlignment(SwingConstants.LEFT);
		btnMasterMatpel.setIcon(new ImageIcon("/home/newbieilmu/workspace/app.newbieilmu/src/icon/Agenda-1-16x16.png"));
		btnMasterMatpel.setBounds(0, 55, 140, 30);
		panelMnuMaster.add(btnMasterMatpel);
		
		JButton btnMasterKelas = new JButton("Master Kelas");
		btnMasterKelas.setMnemonic('M');
		btnMasterKelas.setHorizontalAlignment(SwingConstants.LEFT);
		btnMasterKelas.setIcon(new ImageIcon("/home/newbieilmu/workspace/app.newbieilmu/src/icon/konfigurasi_univ.png"));
		btnMasterKelas.setBounds(0, 85, 140, 30);
		panelMnuMaster.add(btnMasterKelas);
		
		final JCheckBox chkMenuMaster = new JCheckBox("Menu Master");
		chkMenuMaster.setHorizontalAlignment(SwingConstants.LEFT);
		chkMenuMaster.setHorizontalTextPosition(SwingConstants.RIGHT);
		chkMenuMaster.setMnemonic('M');
		chkMenuMaster.setForeground(UIManager.getColor("Button.background"));
		chkMenuMaster.setBackground(UIManager.getColor("Button.darkShadow"));
		chkMenuMaster.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent arg0) {
				if(chkMenuMaster.isSelected()==true){
					panelMnuMaster.setVisible(true);
				}
				else if(chkMenuMaster.isSelected()==false){
					panelMnuMaster.setVisible(false);
				}
			}
		});
		chkMenuMaster.setBorderPaintedFlat(true);
		chkMenuMaster.setBorderPainted(true);
		chkMenuMaster.setBorder(new LineBorder(new Color(0, 0, 0)));
		chkMenuMaster.setSelectedIcon(new ImageIcon("/home/newbieilmu/workspace/app.newbieilmu/src/icon/minus-root.png"));
		chkMenuMaster.setRolloverSelectedIcon(new ImageIcon("/home/newbieilmu/workspace/app.newbieilmu/src/icon/minus-root.png"));
		chkMenuMaster.setRolloverIcon(new ImageIcon("/home/newbieilmu/workspace/app.newbieilmu/src/icon/plus-root.png"));
		chkMenuMaster.setIcon(new ImageIcon("/home/newbieilmu/workspace/app.newbieilmu/src/icon/plus-root.png"));
		chkMenuMaster.setSelected(true);
		chkMenuMaster.setBounds(12, 22, 140, 22);
		panelUtama.add(chkMenuMaster);
		
		JLabel label = new JLabel("");
		label.setIcon(new ImageIcon("/home/newbieilmu/Pictures/bgskul.png"));
		label.setBounds(181, 12, 573, 376);
		contentPane.add(label);
	}
}