JRE 8 rt.jar is the JAR file for JRE 8 RT (Runtime) libraries. JRE (Java Runtime) 8 is the runtime environment included in JDK 8. JRE 8 rt.jar libraries are divided into 6 packages:

com.* - Internal Oracle and Sun Microsystems libraries
java.* - Standard Java API libraries.
javax.* - Extended Java API libraries.
jdk.* -  JDK supporting libraries.
org.* - Third party libraries.
sun.* - Old libraries developed by Sun Microsystems.

JAR File Information:

Directory of C:\fyicenter\jdk-1.8.0_191\jre\lib
      63,596,151 rt.jar

Here is the list of Java classes of the java.* package in JRE 1.8.0_191 rt.jar. Java source codes are also provided.

⏎ java/nio/DirectDoubleBufferRU.java

/*
 * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
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 *
 *
 *
 *
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 *
 *
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 *
 */

// -- This file was mechanically generated: Do not edit! -- //

package java.nio;

import java.io.FileDescriptor;
import sun.misc.Cleaner;
import sun.misc.Unsafe;
import sun.misc.VM;
import sun.nio.ch.DirectBuffer;


class DirectDoubleBufferRU



    extends DirectDoubleBufferU

    implements DirectBuffer
{















































































































































    // For duplicates and slices
    //
    DirectDoubleBufferRU(DirectBuffer db,         // package-private
                               int mark, int pos, int lim, int cap,
                               int off)
    {








        super(db, mark, pos, lim, cap, off);

    }

    public DoubleBuffer slice() {
        int pos = this.position();
        int lim = this.limit();
        assert (pos <= lim);
        int rem = (pos <= lim ? lim - pos : 0);
        int off = (pos << 3);
        assert (off >= 0);
        return new DirectDoubleBufferRU(this, -1, 0, rem, rem, off);
    }

    public DoubleBuffer duplicate() {
        return new DirectDoubleBufferRU(this,
                                              this.markValue(),
                                              this.position(),
                                              this.limit(),
                                              this.capacity(),
                                              0);
    }

    public DoubleBuffer asReadOnlyBuffer() {








        return duplicate();

    }


























































    public DoubleBuffer put(double x) {




        throw new ReadOnlyBufferException();

    }

    public DoubleBuffer put(int i, double x) {




        throw new ReadOnlyBufferException();

    }

    public DoubleBuffer put(DoubleBuffer src) {




































        throw new ReadOnlyBufferException();

    }

    public DoubleBuffer put(double[] src, int offset, int length) {




























        throw new ReadOnlyBufferException();

    }

    public DoubleBuffer compact() {












        throw new ReadOnlyBufferException();

    }

    public boolean isDirect() {
        return true;
    }

    public boolean isReadOnly() {
        return true;
    }















































    public ByteOrder order() {





        return ((ByteOrder.nativeOrder() != ByteOrder.BIG_ENDIAN)
                ? ByteOrder.LITTLE_ENDIAN : ByteOrder.BIG_ENDIAN);

    }


























}

⏎ java/nio/DirectDoubleBufferRU.java

Or download all of them as a single archive file:

File name: jre-rt-java-1.8.0_191-src.zip
File size: 6664831 bytes
Release date: 2018-10-28
Download 

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