beaniebaby.java~6~

来自「深入浅出的介绍j2ee的相关基本知识」· JAVA~6~ 代码 · 共 51 行

package javabeans;

import java.awt.*;
import javax.swing.JPanel;
import javax.swing.BorderFactory;
import javax.swing.border.*;
import java.beans.*;

public class BeanieBaby extends JPanel {
  BorderLayout borderLayout1 = new BorderLayout();
  private String allTiedup;	// allTiedUp属性字段
  private transient PropertyChangeSupport propertyChangeListeners = new PropertyChangeSupport(this);	// PropertyChangeSupport实例，用于消息处理



  public BeanieBaby() {
    try {
      jbInit();
    }
    catch(Exception ex) {
      ex.printStackTrace();
    }
  }

  private void jbInit() throws Exception {
    this.setBackground(Color.red);
    this.setBorder(BorderFactory.createRaisedBevelBorder());
    this.setLayout(borderLayout1);
  }
  public void setAllTiedup(String allTiedup) {	// allTiedUp写方法
     String  oldAllTiedup = this.allTiedup;
     this.allTiedup = allTiedup;
     // 利用PropertyChangeSupport通知监听器属性值变了！
     propertyChangeListeners.firePropertyChange("allTiedup", oldAllTiedup, allTiedup);
   }
   // 事件监听器的注销方法
   public synchronized void removePropertyChangeListener(PropertyChangeListener l) {
     super.removePropertyChangeListener(l);
     propertyChangeListeners.removePropertyChangeListener(l);
   }
   // 事件监听器的注册方法
   public synchronized void addPropertyChangeListener(PropertyChangeListener l) {
     super.addPropertyChangeListener(l);
     propertyChangeListeners.addPropertyChangeListener(l);
   }




}