loginwindow.java

这是一个简单的JAVA程序

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.GridLayout;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;


public class LoginWindow extends JFrame{
	private JTextField jftUser;
	private JPasswordField jpfPassword;
	JButton panicButton, okButton;
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//System.out.println("Hello world!");
		
		LoginWindow frame = new LoginWindow();
		/*frame.setSize(800,600);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setBackground(Color.GREEN);
		frame.setVisible(true);*/
	}



	public LoginWindow(){
	setTitle("登录窗口");
	/*setBackground(Color.RED);
	setForeground(Color.black);
	
	JPanel p1 = new JPanel();
	p1.setLayout(new FlowLayout());
	p1.add(new JLabel("用户名"));*/
	JPanel jpLables = new JPanel();
	jpLables.setLayout(new GridLayout(2,1));
	jpLables.add(new JLabel("用户名"));
	jpLables.add(new JLabel("密码"));
	
	JPanel jpTextFields = new JPanel();
	jpTextFields.setLayout(new GridLayout(2,1));
	jpTextFields.add(jftUser = new JTextField(10));
	jpTextFields.add(jpfPassword = new JPasswordField(10));
	
	JPanel p1 = new JPanel();
	p1.setLayout(new BorderLayout());
	p1.add(jpLables,BorderLayout.WEST);
	p1.add(jpTextFields,BorderLayout.CENTER);
	
	JPanel jpButton = new JPanel();
	jpButton.setLayout(new GridLayout(1,2));
	jpButton.add(okButton = new JButton("登录"));
	jpButton.add(panicButton = new JButton("重置"));
	
	JPanel p2 = new JPanel();
	p2.setLayout(new BorderLayout());
	p2.add(jpButton,BorderLayout.CENTER);
	
	getContentPane().setLayout(new BorderLayout());
	
	getContentPane().add(p1,BorderLayout.CENTER);
	
	getContentPane().add(p2,BorderLayout.SOUTH);
	
	setSize(200, 100);
	setBackground(Color.GREEN);
	setVisible(true);
	
	}
}