student.java

基于mod1编程的Java程序

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

class LoginFrame extends JFrame
{
	JPanel p=new JPanel(new GridLayout(0,1));
	JTextField UserName=new JTextField();
	JPasswordField Password=new JPasswordField();
	JButton button1=new JButton("OK");

	 LoginFrame()
	{
		final JFrame frame=this;
		this.getContentPane().add(p);
		p.add(new JLabel("Username:"));
	    p.add(UserName);
	    p.add(new JLabel("Password:"));
	    p.add(Password);
		p.add(button1);
		button1.addActionListener(new ActionListener()
		{
			public void actionPerformed(ActionEvent e)
			{
				if(UserName.getText().equals("1")&&Password.getText().equals("1"))
				{
					frame.setVisible(false);
		            SystemFrame f2=new SystemFrame();
					f2.setVisible(true);
				}
				else
				{
					JOptionPane.showMessageDialog(null,"Username or Password Error!","Message",0);
				}
			}
		});
		this.setSize(300,200);
		this.setResizable(false);
		this.setVisible(true);
		this.setTitle("Login");
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);	
	}
}

class SystemFrame extends JFrame
{
	JPanel p=new JPanel(new GridLayout(0,1));
	JMenuBar menubar=new JMenuBar();
	JMenu menu1=new JMenu("Search");
	JMenu menu2=new JMenu("Add");
	JMenu menu3=new JMenu("Delete");
	JMenuItem item11=new JMenuItem("Auto");
	JMenuItem item12=new JMenuItem("Hand");
    JMenuItem item1=new JMenu("Search");
	JMenuItem item2=new JMenuItem("Add");
	JMenuItem item3=new JMenuItem("Delete");
    JMenuItem item4=new JMenuItem("Exit");

	SystemFrame()
	{
		final JFrame frame=this;
		this.getContentPane().add(p);
		item11.addActionListener(new ActionListener()
	   {
			public void actionPerformed(ActionEvent e)
			{
				if(e.getSource()==item11)
				{
					JOptionPane.showMessageDialog(null,"Building...","Message",0);
				}
			}
		});
		item12.addActionListener(new ActionListener()
	   {
			public void actionPerformed(ActionEvent e)
			{
				if(e.getSource()==item12)
				{
					HandSearchFrame hand=new HandSearchFrame();
				}
			}
		});

		item2.addActionListener(new ActionListener()
	   {
			public void actionPerformed(ActionEvent e)
			{
				if(e.getSource()==item2)
				{
					Add add=new Add();
				}
			}
		});

		item3.addActionListener(new ActionListener()
	   {
			public void actionPerformed(ActionEvent e)
			{
				if(e.getSource()==item3)
				{
					JOptionPane.showMessageDialog(null,"Building...","Message",0);
				}
			}
		});

		item4.addActionListener(new ActionListener()
	   {
			public void actionPerformed(ActionEvent e)
			{
				if(e.getSource()==item4)
				{
					int result=JOptionPane.showConfirmDialog(null,"Are you sure to exit?","Warning",JOptionPane.OK_CANCEL_OPTION);
					if(result==JOptionPane.OK_OPTION)
					{
						System.exit(0);
					}
				}
			}
		});

        menu1.add(item1);
		menu1.addSeparator();
		menu1.add(item4);
		menu2.add(item2);
		menu3.add(item3);
        item1.add(item11);
		item1.add(item12);
	    menubar.add(menu1);
		menubar.add(menu2);
		menubar.add(menu3);
		setJMenuBar(menubar);
		this.setSize(300,200);
		this.setResizable(false);
		this.setVisible(false);
		this.setTitle("System");
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		//this.show();
		
	}
}
public class Student
{
	public static void main(String args[])
	{
		LoginFrame f1=new LoginFrame();
	}
}