borderlayoutdemo.java

来自「学习Java的一些基本课件和源代码 对于初学者很有帮助的」· Java 代码 · 共 49 行

//BorderLayoutDemo.java
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class BorderLayoutDemo extends JFrame implements ActionListener{
	private JButton buttons[];
	private final String names[]={"隐藏北部","隐藏南部","隐藏东部","隐藏西部","隐藏中部"};
	private BorderLayout layout;
	private Container container;
	
	public BorderLayoutDemo()
	{
		super("边界布局示例");
		layout=new BorderLayout(5,5);
		container=getContentPane();
		container.setLayout(layout);
		buttons=new JButton[names.length];
		for(int count=0;count<names.length;count++){
			buttons[count]=new JButton(names[count]);
			buttons[count].addActionListener(this);
		}
		container.add(buttons[0],"North");
		container.add(buttons[1],"South");
		container.add(buttons[2],"East");
		container.add(buttons[3],"West");
		container.add(buttons[4],"Center");
		setSize(300,200);
		setVisible(true);
	}
	
	public void actionPerformed(ActionEvent event)
	{
		for(int count=0;count<buttons.length;count++)
			if(event.getSource()==buttons[count])
				buttons[count].setVisible(false);
			else
				buttons[count].setVisible(true);
		layout.layoutContainer(container);
	}
	
	public static void main(String[] args)
	{
		BorderLayoutDemo application=new BorderLayoutDemo();
		application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}
}