Tengo un problema al hacer un Debug. cuando presiono f6 o f7 para ver el error, me sale automáticamente un archivo llamado EventDispatchThread.class.

Agradecería su apoyo

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// (version 1.7 : 51.0, super bit)
class java.awt.EventDispatchThread extends java.lang.Thread {

// Field descriptor #126 Lsun/util/logging/PlatformLogger;
private static final sun.util.logging.PlatformLogger eventLog;

// Field descriptor #124 Ljava/awt/EventQueue;
private java.awt.EventQueue theQueue;

// Field descriptor #29 Z
private volatile boolean doDispatch;

// Field descriptor #23 I
private static final int ANY_EVENT = -1;

// Field descriptor #125 Ljava/util/ArrayList;
// Signature: Ljava/util/ArrayList<Ljava/awt/EventFilter;>;
private java.util.ArrayList eventFilters;

// Method descriptor #160 (Ljava/lang/ThreadGroup;Ljava/lang/String;Ljava/awt/EventQueue;)V
// Stack: 3, Locals: 4
EventDispatchThread(java.lang.ThreadGroup arg0, java.lang.String arg1, java.awt.EventQueue arg2);
0 aload_0 [this]
1 aload_1 [arg0]
2 aload_2 [arg1]
3 invokespecial java.lang.Thread(java.lang.ThreadGroup, java.lang.String) [243]
6 aload_0 [this]
7 iconst_1
8 putfield java.awt.EventDispatchThread.doDispatch : boolean [211]
11 aload_0 [this]
12 new java.util.ArrayList [118]
15 dup
16 invokespecial java.util.ArrayList() [245]
19 putfield java.awt.EventDispatchThread.eventFilters : java.util.ArrayList [213]
22 aload_0 [this]
23 aload_3 [arg2]
24 invokevirtual java.awt.EventDispatchThread.setEventQueue(java.awt.EventQueue) : void [225]
27 return

// Method descriptor #8 ()V
// Stack: 2, Locals: 1
public void stopDispatching();
0 aload_0 [this]
1 iconst_0
2 putfield java.awt.EventDispatchThread.doDispatch : boolean [211]
5 return

// Method descriptor #8 ()V