Java IdentityHashMap remove() method

Last Updated : 17 Mar 2025

The remove(Object key) method of the Java IdentityHashMap class is used remove the linkage of the specified key, from the calling IdentityHashMap, if present.

Syntax

Parameters

key - Key whose linkage is to be removed.

Return

The previous value linked with the specified key, or null if there was no linkage.

Example 1

Output:

{Java=1, the=3, language=6, programming=5, best=4, is=2}
3
4
{Java=1, language=6, programming=5, is=2}

Example 2

Output: