import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Menu;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.plaf.basic.BasicInternalFrameTitlePane.MaximizeAction;


public class mainForm {

    JFrame fr = new JFrame();
    Container cn = fr.getContentPane();

    public void initFrame()
    {
        fr.setTitle("Main Form");
        fr.setExtendedState(fr.MAXIMIZED_BOTH);
        fr.setDefaultCloseOperation(fr.EXIT_ON_CLOSE);
        fr.setLocationRelativeTo(null);
        fr.setVisible(true);
        fr.setResizable(false);
    }

    public mainForm()
    {
        // menubar , menu , menu item   = done
        // internal frame               =
        // icon                         =
        // separator                    =
        // accelerator                  =
        JMenuBar mbar = new JMenuBar();
        JMenu menuFile = new JMenu("File");
        JMenu menuEdit = new JMenu("Edit");
        JMenuItem login = new JMenuItem("Login");
        JMenuItem logout = new JMenuItem("Logout");
        JMenuItem exit = new JMenuItem("Exit");

        // adding menu component
        menuFile.add(login);
        menuFile.add(logout);
        menuFile.add(exit);
        mbar.add(menuFile);
        mbar.add(menuEdit);

        //panel
        cn.setLayout(new BorderLayout());
        /*
        JPanel panelatas = new JPanel();
        JPanel paneltengah = new JPanel();
        JPanel panebawah = new JPanel();
         */

        // adding component
        cn.add(mbar,BorderLayout.NORTH);

        initFrame();
    }
}