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EnumSet complementOf() Method in Java

Last Updated : 03 Oct, 2018
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The java.util.EnumSet.complementOf(Enum_Set) method is used to create an EnumSet containing elements of the same type as that of the specified Enum_Set, with the values present in the enum but other than those contained in the specified Enum_Set. Syntax:
New_Enum_Set = EnumSet.complementOf(Enum_Set)
Parameters: The method accepts one parameter Enum_Set whose values are to be neglected while populating the values into the new complemented enum set. Return Values: The method does not return any values. Exceptions: The method throws NullPointerException if the value Enum_Set is NULL. Below programs illustrate the working of java.util.EnumSet.complementOf() method: Program 1:
Output:
Initial set: [Welcome, To, Geeks]
The updated set is:[The, World, of]
Program 2:
Output:
Initial set: [RANGE_ROVER, MUSTANG, CAMARO, AUDI, BMW]
The updated set is:[]

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