Program: 3129
Project: 3129
Buggy source:
private void init(Class cl){
  if (this.clazz != null) {
    return;
  }
  this.clazz=cl;
  List<Method> actionsList=new ArrayList<Method>();
  List<Method> timersList=new ArrayList<Method>();
  this.eventHandlers=new HashMap<String,Method>();
  this.lowMemHandlers=new HashMap<String,Method>();
  Method[] methods=clazz.getMethods();
  for (  Method m : methods) {
    int modifiers=m.getModifiers();
    if (!Modifier.isStatic(modifiers)) {
      continue;
    }
    OnEvent oev=m.getAnnotation(OnEvent.class);
    if (oev != null && m.getParameterTypes().length == 0) {
      eventHandlers.put(oev.value(),m);
    }
    OnError oer=m.getAnnotation(OnError.class);
    if (oer != null) {
      Class[] argTypes=m.getParameterTypes();
      if (argTypes.length == 1 && argTypes[0] == Throwable.class) {
        this.exceptionHandler=m;
      }
    }
    OnExit oex=m.getAnnotation(OnExit.class);
    if (oex != null) {
      Class[] argTypes=m.getParameterTypes();
      if (argTypes.length == 1 && argTypes[0] == int.class) {
        this.exitHandler=m;
      }
    }
    OnTimer ot=m.getAnnotation(OnTimer.class);
    if (ot != null && m.getParameterTypes().length == 0) {
      timersList.add(m);
    }
    OnLowMemory olm=m.getAnnotation(OnLowMemory.class);
    if (olm != null) {
      Class[] argTypes=m.getParameterTypes();
      if ((argTypes.length == 0) || (argTypes.length == 1 && argTypes[0] == MemoryUsage.class)) {
        lowMemHandlers.put(olm.pool(),m);
      }
    }
  }
  List<MemoryPoolMXBean> mpools=getMemoryPoolMXBeans();
  for (  MemoryPoolMXBean mpoolBean : mpools) {
    String name=mpoolBean.getName();
    if (lowMemHandlers.containsKey(name)) {
      Method m=lowMemHandlers.get(name);
      OnLowMemory olm=m.getAnnotation(OnLowMemory.class);
      if (mpoolBean.isUsageThresholdSupported()) {
        mpoolBean.setUsageThreshold(olm.threshold());
      }
    }
  }
  timerHandlers=new Method[timersList.size()];
  timersList.toArray(timerHandlers);
}

Fixed version (ground truth):
private void init(Class cl){
  if (this.clazz != null) {
    return;
  }
  this.clazz=cl;
  List<Method> timersList=new ArrayList<Method>();
  this.eventHandlers=new HashMap<String,Method>();
  this.lowMemHandlers=new HashMap<String,Method>();
  Method[] methods=clazz.getMethods();
  for (  Method m : methods) {
    int modifiers=m.getModifiers();
    if (!Modifier.isStatic(modifiers)) {
      continue;
    }
    OnEvent oev=m.getAnnotation(OnEvent.class);
    if (oev != null && m.getParameterTypes().length == 0) {
      eventHandlers.put(oev.value(),m);
    }
    OnError oer=m.getAnnotation(OnError.class);
    if (oer != null) {
      Class[] argTypes=m.getParameterTypes();
      if (argTypes.length == 1 && argTypes[0] == Throwable.class) {
        this.exceptionHandler=m;
      }
    }
    OnExit oex=m.getAnnotation(OnExit.class);
    if (oex != null) {
      Class[] argTypes=m.getParameterTypes();
      if (argTypes.length == 1 && argTypes[0] == int.class) {
        this.exitHandler=m;
      }
    }
    OnTimer ot=m.getAnnotation(OnTimer.class);
    if (ot != null && m.getParameterTypes().length == 0) {
      timersList.add(m);
    }
    OnLowMemory olm=m.getAnnotation(OnLowMemory.class);
    if (olm != null) {
      Class[] argTypes=m.getParameterTypes();
      if ((argTypes.length == 0) || (argTypes.length == 1 && argTypes[0] == MemoryUsage.class)) {
        lowMemHandlers.put(olm.pool(),m);
      }
    }
  }
  List<MemoryPoolMXBean> mpools=getMemoryPoolMXBeans();
  for (  MemoryPoolMXBean mpoolBean : mpools) {
    String name=mpoolBean.getName();
    if (lowMemHandlers.containsKey(name)) {
      Method m=lowMemHandlers.get(name);
      OnLowMemory olm=m.getAnnotation(OnLowMemory.class);
      if (mpoolBean.isUsageThresholdSupported()) {
        mpoolBean.setUsageThreshold(olm.threshold());
      }
    }
  }
  timerHandlers=new Method[timersList.size()];
  timersList.toArray(timerHandlers);
}