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>
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 Type | Method | Description |
---|---|---|
static <T> UnaryOperator<T> | identity() | Returns a unary operator that always returns its input argument. |
Methods declared in interface java.util.function.Function
andThen, apply, compose
Method Detail
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