labeldemo.java

来自「本书结合作者丰富的实践经验和深厚的理论基础」· Java 代码 · 共 35 行

import java.awt.*;
import java.awt.event.*;
public class LabelDemo extends Frame
{
	public LabelDemo (String str)
    {
      super(str);
      super.setBounds(0,0,400,300);
    }
    //程序的入口方法
        public static void main( String[] args )
        {
                //创建框架窗体
                LabelDemo f=new LabelDemo ("带Label的窗口");
                Label l1=new Label();
                Label l2=new Label("This is Label2 in center",1);
                Label l3=new Label("This is Label3 in right");
                l1.setText("This is a Label1 in left");
                l1.setAlignment(0);
                l3.setAlignment(2);
                f.add(l1,BorderLayout.NORTH);
                f.add(l2,BorderLayout.CENTER);
                f.add(l3,BorderLayout.SOUTH);
                //设置框架窗体的事件监听(关闭窗体事件)
                f.addWindowListener(new WindowAdapter(){
                        public void windowClosing(WindowEvent e)
                        {
                                //正常退出Java虚拟机
                                System.exit(0);
                        }
                });
                f.show();
        }
}