layoutnull.java

java中图形用户界面的设计

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class LayoutNull
{
	public static void main(String args[])
	{
		 myFrame Frame1 = new myFrame("LayoutNull");
		 Frame1.show();
	   Frame1.pack();
	}
}

class myFrame extends JFrame
{
	JLabel label1,label2,label3;
	JTextField text1,text2,text3;
	myFrame(String str)
	{
		super(str);
		setSize(300,200);
	
	  Container Conpane = getContentPane();
	  Conpane.setLayout(null);
			
		label1 = new JLabel("姓名：");
		label2 = new JLabel("住址：");
		label3 = new JLabel("编号：");
    
    text1 = new JTextField(10);
    text2 = new JTextField(10);
    text3 = new JTextField(10);
    
    Conpane.add(label1);
    Conpane.add(label2);
    Conpane.add(label3);
    Conpane.add(text1);
    Conpane.add(text2);
    Conpane.add(text3);
    
    label1.setBounds(40,100,100,40);
    label2.setBounds(40,150,100,40);
    label3.setBounds(40,200,100,40);
    
    text1.setBounds(150,100,200,40);
    text2.setBounds(150,150,200,40);
    text3.setBounds(150,200,200,40);
    							
		addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		});
	}
}