src/share/classes/java/util/function/LongBinaryOperator.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

*** 25,37 **** package java.util.function; /** * An operation on two {@code long} operands yielding a {@code long} result. * * @since 1.8 */ ! public interface LongBinaryOperator { /** * Returns the {@code long} result of the operation upon the {@code long} * operands. The parameters are named {@code left} and {@code right} for * operations where the order of parameters matters. --- 25,55 ---- package java.util.function; /** * An operation on two {@code long} operands yielding a {@code long} result. * + * <p>This is the primitive type specialization of {@link BinaryOperator} for + * {@code long} and also may be used as a {@code BinaryOperator<Long>}. When + * used as a {@code BinaryOperator} the default {@code operate} implementation + * provided by this interface neither accepts null parameters nor does it return + * null results. + * * @since 1.8 */ ! public interface LongBinaryOperator extends BinaryOperator<Long> { ! ! /** ! * {@inheritDoc} ! * ! * @param left {@inheritDoc}, must be non-null ! * @param right {@inheritDoc}, must be non-null ! * @return {@inheritDoc}, always non-null ! */ ! @Override ! public default Long operate(Long left, Long right) { ! return operateAsLong((long)left, (long)right); ! } /** * Returns the {@code long} result of the operation upon the {@code long} * operands. The parameters are named {@code left} and {@code right} for * operations where the order of parameters matters.