testcustombean.java

java模式设计

//简单属性的JAVABEAN演示程序
import java.awt.event.*;
import java.awt.*;
import java.applet.*;
import java.beans.*;

public class TestCustomBean extends Applet implements MouseListener{
	CustomBean cBean;
	Button b;
	public void init() {
	  //设置布局管理器，
	  setLayout(new BorderLayout());
	  cBean = new CustomBean();
	  b = new Button("color");
	  //给按钮b增加事件监听者this，即按钮的单击事件将由TestCustomBean来处理
	  b.addMouseListener(this);
	  //将CustomBean放在布局的中央位置
	  add("Center", cBean);
	  add("South", b);
	}
    
	public void destroy() {
	  remove(cBean);
	  remove(b);
	}
    /** 处理按钮b的单击事件，每单击一次，就改变一次
	 CustomBean的背景属性，在红绿之间切换*/
	public void mousePressed(MouseEvent e) {
	 // e.consume();
	  if (cBean.getColor() == Color.red)
	  {
		 cBean.setColor(Color.green);
	  } else {
	    cBean.setColor(Color.red);
	  }
	}

	public void mouseReleased(MouseEvent e) {}
	public void mouseEntered(MouseEvent e) {}
    public void mouseExited(MouseEvent e) {}
    public void mouseClicked(MouseEvent e) {}

	public static void main(String args[]) {
	  Frame f = new Frame("BeanTest");
	  TestCustomBean ts = new TestCustomBean();
	  ts.init();
	  ts.start();
	  f.add("Center", ts);
	  f.setSize(300,300);
	  f.show();
	}
    
	public String getAppletInfo() {
	  return "简单属性BEAN的测试示例";
	}

}