JDK 17 java.base.jmod is the JMOD file for JDK 17 Base module.

JDK 17 Base module compiled class files are stored in \fyicenter\jdk-17.0.5\jmods\java.base.jmod.

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JDK 17 Base module source code files are stored in \fyicenter\jdk-17.0.5\lib\src.zip\java.base.

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⏎ java/util/function/DoubleUnaryOperator.java

/*
 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package java.util.function;

import java.util.Objects;

/**
 * Represents an operation on a single {@code double}-valued operand that produces
 * a {@code double}-valued result.  This is the primitive type specialization of
 * {@link UnaryOperator} for {@code double}.
 *
 * <p>This is a <a href="package-summary.html">functional interface</a>
 * whose functional method is {@link #applyAsDouble(double)}.
 *
 * @see UnaryOperator
 * @since 1.8
 */
@FunctionalInterface
public interface DoubleUnaryOperator {

    /**
     * Applies this operator to the given operand.
     *
     * @param operand the operand
     * @return the operator result
     */
    double applyAsDouble(double operand);

    /**
     * Returns a composed operator that first applies the {@code before}
     * operator to its input, and then applies this operator to the result.
     * If evaluation of either operator throws an exception, it is relayed to
     * the caller of the composed operator.
     *
     * @param before the operator to apply before this operator is applied
     * @return a composed operator that first applies the {@code before}
     * operator and then applies this operator
     * @throws NullPointerException if before is null
     *
     * @see #andThen(DoubleUnaryOperator)
     */
    default DoubleUnaryOperator compose(DoubleUnaryOperator before) {
        Objects.requireNonNull(before);
        return (double v) -> applyAsDouble(before.applyAsDouble(v));
    }

    /**
     * Returns a composed operator that first applies this operator to
     * its input, and then applies the {@code after} operator to the result.
     * If evaluation of either operator throws an exception, it is relayed to
     * the caller of the composed operator.
     *
     * @param after the operator to apply after this operator is applied
     * @return a composed operator that first applies this operator and then
     * applies the {@code after} operator
     * @throws NullPointerException if after is null
     *
     * @see #compose(DoubleUnaryOperator)
     */
    default DoubleUnaryOperator andThen(DoubleUnaryOperator after) {
        Objects.requireNonNull(after);
        return (double t) -> after.applyAsDouble(applyAsDouble(t));
    }

    /**
     * Returns a unary operator that always returns its input argument.
     *
     * @return a unary operator that always returns its input argument
     */
    static DoubleUnaryOperator identity() {
        return t -> t;
    }
}

⏎ java/util/function/DoubleUnaryOperator.java

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Release date: 2022-09-13
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