usergui.java

使用java application实现简单的用户界面,使用jdk自带的布局嵌套

import java.awt.*;
import java.awt.event.*;
public class UserGUi extends Frame
{
	public UserGUi()
	{
		addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent x)
			{
				dispose();
				System.exit(0);
			}
		});
	}
	public static void main(String args[])
	{
		UserGUi Exam=new UserGUi();
		Exam.setTitle("Phone Book");
		Exam.setSize(500,200);
		GridLayout G1=new GridLayout(2,1);
		GridLayout G2=new GridLayout(2,3,5,0);
		FlowLayout G3=new FlowLayout();
		Exam.setLayout(G1);
		Panel p1=new Panel();
		p1.setLayout(G2);
		Panel p2=new Panel();
		p2.setLayout(G1);
		Panel p3=new Panel();
		p3.setLayout(G3);
		Panel p4=new Panel();
		p4.setLayout(G3);
		Label L1=new Label("Action:",Label.CENTER);
		Label L2=new Label("Full name:",Label.CENTER);
		Label L3=new Label("Phone number:",Label.CENTER);
		p2.add(new Button("lookup"));
	    p2.add(new Button("add"));
		TextField T1=new TextField(18);
		TextField T2=new TextField(18);
		Label L4=new Label("Please enter name and phone for add,or name-only for search.",Label.CENTER);
		p1.add(L1);
		p1.add(L2);
		p1.add(L3);
		p1.add(p2);
		p3.add(T1);
		p4.add(T2);
		p1.add(p3);
		p1.add(p4);
		Exam.add(p1);
		Exam.add(L4);
		Exam.setResizable(false);
		Exam.setVisible(true);
	}
}