src/share/classes/java/util/function/UnaryOperator.java
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rev 6189 : 8004015: Add Extends and deaults for basic functional interface types
Summary: Adds the appropriate extends and default methods for core functional interfaces used by the JSR335 libraries.
Reviewed-by: duke
@@ -30,11 +30,16 @@
*
* @param <T> the type of operand to {@code operate} and of the result
*
* @since 1.8
*/
-public interface UnaryOperator<T> {
+public interface UnaryOperator<T> extends Function<T, T> {
+
+ @Override
+ public default T apply(T operand) {
+ return operate(operand);
+ }
/**
* Returns the result of the operation upon the operand.
*
* @param operand the operand