是否能够在自定义的类中抛出一个自定义的事件，让一个自定义的Listener接收？

Question

当然可以，java的接口可以实现。
呵呵，比vb、vc的函数回调高明多了。

Answer 1

逻辑上参考这里：
http://www-900.ibm.com/developerWorks/cn/java/jw-tips/tip010/index.shtml

Answer 2

you can create your own customized EventListener extends EventListener interface in java.util.*;This method is anyhow more advanced in architecture,  I think.

Answer 3

//Step 1: Create your customized Event//file: OkButtonActionPerformedEvent.javaimport java.util.*;public class OkButtonActionPerformedEvent extends EventObject {   public OkButtonActionPerformedEvent(Object source) {
      super(source);
   }
}

Answer 4

//Step 2: Create your customized Listener
//file: OkButtonActionPerformedListenerimport java.util.*;public interface OkButtonActionPerformedListener extends EventListener {   public void okButtonActionPerformed(OkButtonActionPerformedEvent e);
}

Answer 5

//Step 3: Throw your customized Event in your specific location
//file: TRToolBar.javaimport java.awt.*;
import java.awt.event.*;
import java.util.*;public class TRToolBar extends TRPanel
{
    public synchronized void removeOkButtonActionPerformedListener(OkButtonActionPerformedListener l) {
        if(okButtonActionPerformedListeners != null && okButtonActionPerformedListeners.contains(l)) {
            Vector v = (Vector) okButtonActionPerformedListeners.clone();
            v.removeElement(l);
            okButtonActionPerformedListeners = v;
        }
    }    public synchronized void addOkButtonActionPerformedListener(OkButtonActionPerformedListener l) {
        Vector v = okButtonActionPerformedListeners == null ? new Vector(2) : (Vector) okButtonActionPerformedListeners.clone();
        if(!v.contains(l)) {
            v.addElement(l);
            okButtonActionPerformedListeners = v;
        }
    }    protected void fireOkButtonActionPerformed(OkButtonActionPerformedEvent e) {
        if(okButtonActionPerformedListeners != null) {
            Vector listeners = okButtonActionPerformedListeners;
            int count = listeners.size();
            for (int i = 0; i < count; i++) {
                ((OkButtonActionPerformedListener) listeners.elementAt(i)).okButtonActionPerformed(e);
            }
        }
    }    void buttonOk_actionPerformed(ActionEvent e) {
        this.fireOkButtonActionPerformed(new OkButtonActionPerformedEvent(buttonOk));
    }    ...
}

Answer 6

//Step 4: Register the listener in proper location:public class MainFrame extends JFrame {
   TRToolBar toolbar = new TRToolBar();
   public MainFrame() {
      ...
      toolbar.addOkButtonActionPerformedListener(new OkButtonActionPerformedListener() {
         public void okButtonActionPerformed(OkButtonActionPerformedEvent e) {
            System.out.println("ToolBar okButtonActionPerformed");
         }
      });
   }
}

Answer 7

//Addition to Step 3
//Sorry. I forgot a important variable declaration in TRToolBar.javaprivate transient Vector okButtonActionPerformedListeners;