code: def build_java_worker_command(
          java_worker_options,
          redis_address,
          plasma_store_name,
          raylet_name,
          redis_password,
          temp_dir,
  ):
      
      assert java_worker_options is not None
  
      command = "java ".format(java_worker_options)
      if redis_address is not None:
          command += "-Dray.redis.address={} ".format(redis_address)
  
      if plasma_store_name is not None:
          command += (
              "-Dray.object-store.socket-name={} ".format(plasma_store_name))
  
      if raylet_name is not None:
          command += "-Dray.raylet.socket-name={} ".format(raylet_name)
  
      if redis_password is not None:
          command += "-Dray.redis.password={} ".format(redis_password)
  
      command += "-Dray.home={} ".format(RAY_HOME)
      # TODO(suquark): We should use temp_dir as the input of a java worker.
      command += "-Dray.log-dir={} ".format(os.path.join(temp_dir, "sockets"))
  
      if java_worker_options:
          # Put `java_worker_options` in the last, so it can overwrite the
          # above options.
          command += java_worker_options + " "
      command += "org.ray.runtime.runner.worker.DefaultWorker"
  
      return command
docs: This method assembles the command used to start a Java worker.
  
      Args:
          java_worker_options (str): The command options for Java worker.
          redis_address (str): Redis address of GCS.
          plasma_store_name (str): The name of the plasma store socket to connect
             to.
          raylet_name (str): The name of the raylet socket to create.
          redis_password (str): The password of connect to redis.
          temp_dir (str): The path of the temporary directory Ray will use.
      Returns:
          The command string for starting Java worker.