WeakHashMap remove Example
WeakHashMap class remove example. This example shows you how to use remove method.
WeakHashMap class remove example.public V remove(Object key) Removes the mapping for a key from this weak hash map if it is present. More formally, if this map contains a mapping from key k to value v such that (key==null ? k==null : key.equals(k)), that mapping is removed.
Here is the code
/**
* @ # Remove.java
* A class repersenting use to remove method
* of WeakHashMap class in java.util package
* version 22 May 2008
* author Rose India
*/
import java.util.*;
public class Remove {
public static void main(String args[]) {
WeakHashMap map = new WeakHashMap();
map.put(1, "A");
map.put(2, "B");
map.put(3, "C");
map.put(4, "D");
System.out.println("map = " + map);
map.remove(3);
System.out.println("map = " + map);
}
} |
Output
map = {4=D, 3=C, 2=B, 1=A}
map = {4=D, 2=B, 1=A} |
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