The java.util.IdentityHashMap.size() method of IdentityHashMap class is used to get the size of the IdentityHashMap which refers to the number of the key-value pair or mappings in the Map.
Syntax:
Identity_Hash_Map.size()
Parameters: The method does not take any parameters.
Return Value: The method returns the size of the map which also means the number of key-value pairs present in the map.
Below programs illustrate the java.util.IdentityHashMap.size() method:
Program 1:
Output:
Initial Mappings are: {Geeks=20, Welcomes=25, You=30, 4=15}
The size of the map is 4
Program 2:
Output:
Initial Mappings are: {Welcomes=25, 4=15, You=30, Geeks=20}
The size of the map is 4
Note: The same operation can be performed with any type of Mappings with variation and combination of different data types.
