- 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>
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:
Function
-
Method Summary
Modifier and TypeMethodDescriptionstatic <T> UnaryOperator<T>
identity()
Returns a unary operator that always returns its input argument.
-
Method Details
-
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
-