Program: 93776
Project: 93776
Buggy source:
private ComponentModifier retrieveComponentModifier(String className){
  Log.i(TAG_DEX_SAMPLE,"String_Node_Str");
  ComponentModifier retComponentModifier=null;
  final String jarContainerPath=Environment.getExternalStorageDirectory().getAbsolutePath() + "String_Node_Str";
  File dexOutputDir=getDir("String_Node_Str",MODE_PRIVATE);
  DexClassLoader mDexClassLoader=new DexClassLoader(jarContainerPath,dexOutputDir.getAbsolutePath(),null,getClass().getClassLoader());
  try {
    Class<?> loadedClass=mDexClassLoader.loadClass(className);
    retComponentModifier=(ComponentModifier)loadedClass.newInstance();
  }
 catch (  ClassNotFoundException e) {
    Log.e(TAG_DEX_SAMPLE,"String_Node_Str");
    e.printStackTrace();
  }
catch (  InstantiationException e) {
    Log.e(TAG_DEX_SAMPLE,"String_Node_Str");
    e.printStackTrace();
  }
catch (  IllegalAccessException e) {
    Log.e(TAG_DEX_SAMPLE,"String_Node_Str");
    e.printStackTrace();
  }
  if (retComponentModifier != null) {
    final String shortClassName=retComponentModifier.getClass().getSimpleName();
    Log.i(TAG_DEX_SAMPLE,"String_Node_Str" + shortClassName + "String_Node_Str"+ jarContainerPath);
    toastHandler.post(new Runnable(){
      @Override public void run(){
        Toast.makeText(DexClassSampleActivity.this,"String_Node_Str" + shortClassName + "String_Node_Str"+ jarContainerPath,Toast.LENGTH_LONG).show();
      }
    }
);
  }
 else {
    toastHandler.post(new Runnable(){
      @Override public void run(){
        Toast.makeText(DexClassSampleActivity.this,"String_Node_Str",Toast.LENGTH_SHORT).show();
      }
    }
);
    finish();
  }
  return retComponentModifier;
}

Fixed version (ground truth):
private ComponentModifier retrieveComponentModifier(String className){
  Log.d(TAG_DEX_SAMPLE,"String_Node_Str");
  ComponentModifier retComponentModifier=null;
  final String jarContainerPath=Environment.getExternalStorageDirectory().getAbsolutePath() + "String_Node_Str";
  File dexOutputDir=getDir("String_Node_Str",MODE_PRIVATE);
  DexClassLoader mDexClassLoader=new DexClassLoader(jarContainerPath,dexOutputDir.getAbsolutePath(),null,getClass().getClassLoader());
  try {
    Class<?> loadedClass=mDexClassLoader.loadClass(className);
    retComponentModifier=(ComponentModifier)loadedClass.newInstance();
  }
 catch (  ClassNotFoundException e) {
    Log.e(TAG_DEX_SAMPLE,"String_Node_Str");
    e.printStackTrace();
  }
catch (  InstantiationException e) {
    Log.e(TAG_DEX_SAMPLE,"String_Node_Str");
    e.printStackTrace();
  }
catch (  IllegalAccessException e) {
    Log.e(TAG_DEX_SAMPLE,"String_Node_Str");
    e.printStackTrace();
  }
  if (retComponentModifier != null) {
    final String shortClassName=retComponentModifier.getClass().getSimpleName();
    Log.i(TAG_DEX_SAMPLE,"String_Node_Str" + shortClassName + "String_Node_Str"+ jarContainerPath);
    toastHandler.post(new Runnable(){
      @Override public void run(){
        Toast.makeText(DexClassSampleActivity.this,"String_Node_Str" + shortClassName + "String_Node_Str"+ jarContainerPath,Toast.LENGTH_LONG).show();
      }
    }
);
  }
 else {
    toastHandler.post(new Runnable(){
      @Override public void run(){
        Toast.makeText(DexClassSampleActivity.this,"String_Node_Str",Toast.LENGTH_SHORT).show();
      }
    }
);
    finish();
  }
  return retComponentModifier;
}