Package Summary  Overview Summary

class:UnaryOperator [NONE]
Type Parameters:
T - the type of the operand and result of the operator
All Superinterfaces:
Function<T,T>
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterfacepublic interface UnaryOperator<T> extends Function<T,T>
Represents an operation on a single operand that produces a result of the same type as its operand. This is a specialization of Function for the case where the operand and result are of the same type.

This is a functional interface whose functional method is Function.apply(Object).

Since:
1.8
See Also:

method:identity() [NONE]

  • identity

    static <T> UnaryOperator<T> identity()
    Returns a unary operator that always returns its input argument.
    Type Parameters:
    T - the type of the input and output of the operator
    Returns:
    a unary operator that always returns its input argument

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