org.apache.commons.lang.mutable
public interface Mutable
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
Version: $Id: Mutable.java 161243 2005-04-14 04:30:28Z ggregory $
Method Summary | |
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Object | getValue()
Gets the value of this mutable.
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void | setValue(Object value)
Sets the value of this mutable.
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Returns: the stored value
Parameters: value the value to store
Throws: NullPointerException if the object is null and null is invalid ClassCastException if the type is invalid