borderlayouttest.java

《Java程序设计与应用》-张仕斌-源程序 《Java程序设计与应用》-张仕斌-源程序

//BorderLayoutTest.java
import java.awt.*;
import javax.swing.*;

public class BorderLayoutTest extends JFrame {
	
	private JButton btn = null;
	
	public BorderLayoutTest() {
		super("BorderLayout Test");
		//获得当前窗体的容器
		Container pane = this.getContentPane();
		//设置为BorderLayout布局
		pane.setLayout(new BorderLayout());
		//依次加入五个按钮到相应位置
		btn = new JButton("North");
		pane.add(btn,BorderLayout.NORTH);
		btn = new JButton("South");
		pane.add(btn,BorderLayout.SOUTH);
		btn = new JButton("East");
		pane.add(btn,BorderLayout.EAST);
		btn = new JButton("West");
		pane.add(btn,BorderLayout.WEST);
		btn = new JButton("Center");
		pane.add(btn,BorderLayout.CENTER);
	}
	
	public static void main(String[]args) {
		BorderLayoutTest blt = new BorderLayoutTest();
		blt.setSize(400,200);
		blt.setDefaultCloseOperation(EXIT_ON_CLOSE);
		blt.setVisible(true);
	}
}