Package org.apache.commons.lang3.mutable
Interface Mutable<T>
- Type Parameters:
- T- the type to set and get
- All Known Implementing Classes:
- MutableBoolean,- MutableByte,- MutableDouble,- MutableFloat,- MutableInt,- MutableLong,- MutableObject,- MutableShort
public interface Mutable<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/string. 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
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Method Summary
- 
Method Details- 
getValueGets the value of this mutable.- Returns:
- the stored value
 
- 
setValueSets 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
 
 
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