nolayout.java

本java源程序包括了大量的学习程序（共27章）方便大家学习

import java.awt.*;
import javax.swing.*;
public class NoLayout extends JFrame 
{
	private JLabel username, password;
	private JTextField  username2;
	private JPasswordField password2;
	private JButton button;
	
    public NoLayout() 
    {
    	super("NoLayout");
        setSize(300, 250);       
        try
        {  //系统外观
		  UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
	    }catch(Exception e){}
		
        //获取内容面板并且设置布局管理器
        Container container = getContentPane();
        container.setBackground(Color.YELLOW);
        container.setLayout(null);
        //创建标签
        username = new JLabel("用户名:", JLabel.RIGHT);
        password = new JLabel("密   码:", JLabel.RIGHT);
        //创建文本域,密码域
        username2 = new JTextField(10);
        password2 = new JPasswordField(10);
        //创建按钮
        button = new JButton("确定");
        
        //设置组件放置位置
        username.setBounds(80, 50, 50, 25);
        username2.setBounds(140, 50, 70, 25);
        password.setBounds(77, 85, 50, 25);
        password2.setBounds(140, 85, 70, 25);
        button.setBounds(125, 120, 60, 25);
        
        container.add(username);
        container.add(username2);
        container.add(password);
        container.add(password2);
        container.add(button);
        
        setVisible(true);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
    }
   
    public static void main(String arguments[]) 
    {
        NoLayout application = new NoLayout();
    }
}