Program: 133965
Project: 133965
Buggy source:
/** 
 * @param classType
 * @param parentClass a parent of classType that has a visible default constructor
 * @return A list of all of the T objects that were loaded from the jar files within @param directory
 */
@SuppressWarnings("String_Node_Str") public List<T> load(Class<?> classType,Class<?> parentClass){
  ArrayList<T> loadables=new ArrayList<>();
  for (  File file : files) {
    JarFile jarFile=null;
    try {
      jarFile=new JarFile(file);
      Enumeration<JarEntry> entries=jarFile.entries();
      while (entries.hasMoreElements()) {
        JarEntry entry=entries.nextElement();
        if (!entry.getName().endsWith("String_Node_Str")) {
          continue;
        }
        String className=entry.getName().replace('/','.').substring(0,entry.getName().length() - 6);
        Class<?> clazz=null;
        try {
          clazz=Class.forName(className,true,loader);
        }
 catch (        Exception e) {
          continue;
        }
        if (!classType.isAssignableFrom(clazz) || clazz.isInterface() || Modifier.isAbstract(clazz.getModifiers())) {
          continue;
        }
        ReflectionFactory rf=ReflectionFactory.getReflectionFactory();
        Constructor<?> objDef=parentClass.getDeclaredConstructor();
        Constructor<?> intConstr=rf.newConstructorForSerialization(clazz,objDef);
        T loadable=(T)clazz.cast(intConstr.newInstance());
        loadables.add(loadable);
        AbilityLoadEvent<T> event=new AbilityLoadEvent<T>(plugin,loadable,jarFile);
        plugin.getServer().getPluginManager().callEvent(event);
      }
    }
 catch (    Exception e) {
      e.printStackTrace();
      plugin.getLogger().log(Level.WARNING,"String_Node_Str");
      plugin.getLogger().log(Level.WARNING,"String_Node_Str" + file.getName() + "String_Node_Str");
    }
 finally {
      if (jarFile != null) {
        try {
          jarFile.close();
        }
 catch (        IOException e) {
          e.printStackTrace();
        }
      }
    }
  }
  return loadables;
}

Fixed version (ground truth):
/** 
 * @param classType
 * @param parentClass a parent of classType that has a visible default constructor
 * @return A list of all of the T objects that were loaded from the jar files within @param directory
 */
@SuppressWarnings("String_Node_Str") public List<T> load(Class<?> classType,Class<?> parentClass){
  ArrayList<T> loadables=new ArrayList<>();
  for (  File file : files) {
    JarFile jarFile=null;
    try {
      jarFile=new JarFile(file);
      Enumeration<JarEntry> entries=jarFile.entries();
      while (entries.hasMoreElements()) {
        JarEntry entry=entries.nextElement();
        if (!entry.getName().endsWith("String_Node_Str")) {
          continue;
        }
        String className=entry.getName().replace('/','.').substring(0,entry.getName().length() - 6);
        Class<?> clazz=null;
        try {
          clazz=Class.forName(className,true,loader);
        }
 catch (        Exception|Error e) {
          continue;
        }
        if (!classType.isAssignableFrom(clazz) || clazz.isInterface() || Modifier.isAbstract(clazz.getModifiers())) {
          continue;
        }
        ReflectionFactory rf=ReflectionFactory.getReflectionFactory();
        Constructor<?> objDef=parentClass.getDeclaredConstructor();
        Constructor<?> intConstr=rf.newConstructorForSerialization(clazz,objDef);
        T loadable=(T)clazz.cast(intConstr.newInstance());
        loadables.add(loadable);
        AbilityLoadEvent<T> event=new AbilityLoadEvent<T>(plugin,loadable,jarFile);
        plugin.getServer().getPluginManager().callEvent(event);
      }
    }
 catch (    Exception|Error e) {
      e.printStackTrace();
      plugin.getLogger().log(Level.WARNING,"String_Node_Str");
      plugin.getLogger().log(Level.WARNING,"String_Node_Str" + file.getName() + "String_Node_Str");
    }
 finally {
      if (jarFile != null) {
        try {
          jarFile.close();
        }
 catch (        IOException e) {
          e.printStackTrace();
        }
      }
    }
  }
  return loadables;
}