JDK 11 java.base.jmod is the JMOD file for JDK 11 Base module.

JDK 11 Base module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\java.base.jmod.

JDK 11 Base module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.

JDK 11 Base module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\java.base.

You can click and view the content of each source code file in the list below.

⏎ java/util/function/DoubleConsumer.java

/*
 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */
package java.util.function;

import java.util.Objects;

/**
 * Represents an operation that accepts a single {@code double}-valued argument and
 * returns no result.  This is the primitive type specialization of
 * {@link Consumer} for {@code double}.  Unlike most other functional interfaces,
 * {@code DoubleConsumer} is expected to operate via side-effects.
 *
 * <p>This is a <a href="package-summary.html">functional interface</a>
 * whose functional method is {@link #accept(double)}.
 *
 * @see Consumer
 * @since 1.8
 */
@FunctionalInterface
public interface DoubleConsumer {

    /**
     * Performs this operation on the given argument.
     *
     * @param value the input argument
     */
    void accept(double value);

    /**
     * Returns a composed {@code DoubleConsumer} that performs, in sequence, this
     * operation followed by the {@code after} operation. If performing either
     * operation throws an exception, it is relayed to the caller of the
     * composed operation.  If performing this operation throws an exception,
     * the {@code after} operation will not be performed.
     *
     * @param after the operation to perform after this operation
     * @return a composed {@code DoubleConsumer} that performs in sequence this
     * operation followed by the {@code after} operation
     * @throws NullPointerException if {@code after} is null
     */
    default DoubleConsumer andThen(DoubleConsumer after) {
        Objects.requireNonNull(after);
        return (double t) -> { accept(t); after.accept(t); };
    }
}

⏎ java/util/function/DoubleConsumer.java

Or download all of them as a single archive file:

File name: java.base-11.0.1-src.zip
File size: 8740354 bytes
Release date: 2018-11-04
Download 

⇒ JDK 11 java.compiler.jmod - Compiler Module

⇐ JDK 11 Modules List

⇑ Download and Use JDK 11

⇑⇑ FAQ for JDK (Java Development Kit)