AspectJ EDT-Checker代码问题

Question

我目前使用Alexander Potochkin的AspectJ EDTChecker code（相关代码在帖子底部）。

这段代码（从我对AspectJ的了解很少）抱怨在Swing EDT中没有发生的任何JComponent方法调用或构造函数调用。

但是，以下仅对JList构造函数抱怨，而不是JFrame构造函数。谁能告诉我为什么？谢谢！

package testEDT; 

import javax.swing.DefaultListModel; 
import javax.swing.JFrame; 
import javax.swing.JList; 

public class TestEDT{ 

    JList list; 
    final JFrame frame; 

    public TestEDT() { 
     DefaultListModel dlm = new DefaultListModel(); 
     list = new JList(dlm); 
     frame = new JFrame("TestEDT"); 
    } 

    public static void main(String args[]) { 
     TestEDT t = new TestEDT(); 
     t.frame.setVisible(true); 
    } 
} 

亚历山大Potochkin的AspectJ的代码：

package testEDT; 

import javax.swing.*; 

/** 
* AspectJ code that checks for Swing component methods being executed OUTSIDE the Event-Dispatch-Thread. 
* 
* (For info on why this is bad, see: http://java.sun.com/products/jfc/tsc/articles/threads/threads1.html) 
* 
* From Alexander Potochkin's blog post here: 
* http://weblogs.java.net/blog/alexfromsun/archive/2006/02/debugging_swing.html 
* 
*/ 
aspect EdtRuleChecker{ 
    /** Flag for use */ 
    private boolean isStressChecking = true; 

    /** defines any Swing method */ 
    public pointcut anySwingMethods(JComponent c): 
     target(c) && call(* *(..)); 

    /** defines thread-safe methods */ 
    public pointcut threadSafeMethods():   
     call(* repaint(..)) || 
     call(* revalidate()) || 
     call(* invalidate()) || 
     call(* getListeners(..)) || 
     call(* add*Listener(..)) || 
     call(* remove*Listener(..)); 

    /** calls of any JComponent method, including subclasses */ 
    before(JComponent c): anySwingMethods(c) && 
          !threadSafeMethods() && 
          !within(EdtRuleChecker) { 
     if (!SwingUtilities.isEventDispatchThread() && (isStressChecking || c.isShowing())) { 
      System.err.println(thisJoinPoint.getSourceLocation()); 
      System.err.println(thisJoinPoint.getSignature()); 
      System.err.println(); 
     } 
    } 

    /** calls of any JComponent constructor, including subclasses */ 
    before(): call(JComponent+.new(..)) { 
     if (isStressChecking && !SwingUtilities.isEventDispatchThread()) { 
      System.err.println(thisJoinPoint.getSourceLocation()); 
      System.err.println(thisJoinPoint.getSignature() + " *constructor*"); 
      System.err.println(); 
     } 
    } 
} 

Answer 1

JFrame不是JComponent一个子类，但JList是。