cn.hutool.core.lang

Class Holder<T>

java.lang.Object

cn.hutool.core.lang.mutable.MutableObj<T>

cn.hutool.core.lang.Holder<T>

Type Parameters:

T - 所持有值类型

All Implemented Interfaces:

Mutable<T>, Serializable

public final class Holder<T>
extends MutableObj<T>

为不可变的对象引用提供一个可变的包装，在java中支持引用传递。

Author:

Looly

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
Holder() 构造
Holder(T value) 构造

Method Summary

Modifier and Type	Method and Description
static <T> Holder<T>	of(T value) 新建Holder类，持有指定值，当值为空时抛出空指针异常

Methods inherited from class cn.hutool.core.lang.mutable.MutableObj

equals, get, hashCode, set, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Holder

public Holder()

构造

Holder

public Holder(T value)

构造

Parameters:

value - 被包装的对象

Method Detail

of

public static <T> Holder<T> of(T value)
                        throws NullPointerException

新建Holder类，持有指定值，当值为空时抛出空指针异常

Type Parameters:

T - 被持有的对象类型

Parameters:

value - 值，不能为空

Returns:

Holder

Throws:

NullPointerException