testnesting.java

容器的嵌套示例,把一个文本框放入一个容器的中央.一个文件按钮放在北边,一个帮助按钮放在西边.

//例12-8  容器嵌套
import java.awt.*;
	public class TestNesting{
	private Frame f;
	private Panel p;
	private Button bw,bc;
	private Button bfile,bhelp;
    private TextArea ta;
	public void creat(){
		f = new Frame("容器嵌套");
        ta=new TextArea("text area");
		bw =new Button("West");
		bc =new Button("Work space region");
		f.add(bw,"West");
		f.add(bc,"Center");
		p = new Panel();
        p.setLayout(new BorderLayout());
		f.add(p,"North");
		bfile= new Button("文件");
		bhelp= new Button("帮助");
		p.add(bfile,"North");
		p.add(bhelp,"West");
        p.add(ta,"Center");
		f.pack();
		f.setVisible(true);
	}
     public static void main(String args[])  
	{
		TestNesting gui = new TestNesting();
		gui.creat();	
     }
	}