org.apache.hadoop.util

クラス StringInterner

java.lang.Object

org.apache.hadoop.util.StringInterner

@InterfaceAudience.Public
 @InterfaceStability.Stable
public class StringInterner
extends Object

Provides equivalent behavior to String.intern() to optimize performance, whereby does not consume memory in the permanent generation.

コンストラクタのサマリー

コンストラクタ

コンストラクタと説明
StringInterner()

メソッドのサマリー

修飾子とタイプ	メソッドと説明
static String	strongIntern(String sample) Interns and returns a reference to the representative instance for any of a collection of string instances that are equal to each other.
static String	weakIntern(String sample) Interns and returns a reference to the representative instance for any of a collection of string instances that are equal to each other.

クラスから継承されたメソッド java.lang.Object

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

コンストラクタの詳細

StringInterner

public StringInterner()

メソッドの詳細

strongIntern

public static String strongIntern(String sample)

Interns and returns a reference to the representative instance for any of a collection of string instances that are equal to each other. Retains strong reference to the instance, thus preventing it from being garbage-collected.

パラメータ:

sample - string instance to be interned

戻り値:

strong reference to interned string instance

weakIntern

public static String weakIntern(String sample)

Interns and returns a reference to the representative instance for any of a collection of string instances that are equal to each other. Retains weak reference to the instance, and so does not prevent it from being garbage-collected.

パラメータ:

sample - string instance to be interned

戻り値:

weak reference to interned string instance