Program: 46641
Project: 46641
Buggy source:
/** 
 * Spawn an object at the desired location and checks if it happens
 * @param location Location to spawn the object
 * @param object the object to spawn
 */
public static void spawnObject(Location location,String object){
  if (object == "String_Node_Str") {
    if (world.generateTree(location,TreeType.values()[random(0,TreeType.values().length)])) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else   if (object == "String_Node_Str") {
    if (world.spawnBoat(location) != null) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else   if (object == "String_Node_Str") {
    if (world.spawnMinecart(location) != null) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else   if (object == "String_Node_Str") {
    if (world.spawnPoweredMinecart(location) != null) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else   if (object == "String_Node_Str") {
    if (world.spawnStorageMinecart(location) != null) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else   if (object == "String_Node_Str") {
    if (world.strikeLightning(location) != null) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else {
    log.severe("String_Node_Str");
  }
}

Fixed version (ground truth):
/** 
 * Spawn an object at the desired location and checks if it happens
 * @param location Location to spawn the object
 * @param object the object to spawn
 */
public static void spawnObject(Location location,String object){
  if (object.trim().equalsIgnoreCase("String_Node_Str")) {
    if (world.generateTree(location,TreeType.values()[random(0,TreeType.values().length - 1)])) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else   if (object.trim().equalsIgnoreCase("String_Node_Str")) {
    if (world.spawnBoat(location) != null) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else   if (object.trim().equalsIgnoreCase("String_Node_Str")) {
    if (world.spawnMinecart(location) != null) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else   if (object.trim().equalsIgnoreCase("String_Node_Str")) {
    if (world.spawnPoweredMinecart(location) != null) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else   if (object.trim().equalsIgnoreCase("String_Node_Str")) {
    if (world.spawnStorageMinecart(location) != null) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else   if (object.trim().equalsIgnoreCase("String_Node_Str")) {
    if (world.strikeLightning(location) != null) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else   if (object.trim().equalsIgnoreCase("String_Node_Str")) {
    if (createLightPost(location)) {
      log.info("String_Node_Str");
    }
 else {
      log.severe("String_Node_Str");
    }
  }
 else {
    log.severe("String_Node_Str" + object);
    world.getBlockAt(location).setType(org.bukkit.Material.TNT);
  }
}