org.apache.commons.lang3.mutable

Interface Mutable<T>

Type Parameters:

T - the type to wrap.

All Superinterfaces:

Supplier<T>

All Known Implementing Classes:

MutableBoolean, MutableByte, MutableDouble, MutableFloat, MutableInt, MutableLong, MutableObject, MutableShort

public interface Mutable<T>
extends Supplier<T>

Provides mutable access to a value.

Mutable is used as a generic interface to the implementations in this package.

A typical use case would be to enable a primitive or string to be passed to a method and allow that method to effectively change the value of the primitive/object. Another use case is to store a frequently changing primitive in a collection (for example a total in a map) without needing to create new Integer/Long wrapper objects.

Since:

2.1

Method Summary

Modifier and Type	Method and Description
default T	get() Gets the value of this mutable.
T	getValue() Deprecated. Use get().
void	setValue(T value) Sets the value of this mutable.

Method Detail

get

default T get()

Gets the value of this mutable.

Specified by:

get in interface Supplier<T>

Returns:

the stored value.

Since:

3.18.0

getValue

@Deprecated
T getValue()

Deprecated. Use get().

Gets the value of this mutable.

Returns:

the stored value

setValue

void setValue(T value)

Sets the value of this mutable.

Parameters:

value - the value to store

Throws:

NullPointerException - if the object is null and null is invalid.

ClassCastException - if the type is invalid.