Interface UnaryOperator<T>

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.

@FunctionalInterface
public interface UnaryOperator<T>
extends Function<T,T>

Since:

1.8

See Also:

Function

Methods

identity

static <T> UnaryOperator<T> identity()

Returns a unary operator that always returns its input argument.

Specified by:

identity in interface Function<T,T>

Type Parameters:

T - the type of the input and output of the operator

Returns:

a unary operator that always returns its input argument