org.apache.hadoop.hdfs.util
Class Holder<T>

java.lang.Object
  org.apache.hadoop.hdfs.util.Holder<T>

public class Holder<T>
extends Object

A Holder is simply a wrapper around some other object. This is useful in particular for storing immutable values like boxed Integers in a collection without having to do the "lookup" of the value twice.

Field Summary

T

held

Constructor Summary

Holder(T held)

Method Summary

String

toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

held

public T held

Constructor Detail

Holder

public Holder(T held)

Method Detail

toString

public String toString()

Overrides:

toString in class Object