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 com.* package in JRE 1.8.0_191 rt.jar. Java source codes are also provided.

⏎ com/sun/corba/se/impl/protocol/giopmsgheaders/Message_1_2.java

/*
 * Copyright (c) 2000, 2004, 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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 */
package com.sun.corba.se.impl.protocol.giopmsgheaders;

import java.nio.ByteBuffer;

import com.sun.corba.se.spi.ior.iiop.GIOPVersion;

public class Message_1_2 extends Message_1_1
{
    protected int request_id = (int) 0;

    Message_1_2() {}

    Message_1_2(int _magic, GIOPVersion _GIOP_version, byte _flags,
            byte _message_type, int _message_size) {

        super(_magic,
              _GIOP_version,
              _flags,
              _message_type,
              _message_size);
    }

    /**
     * The byteBuffer is presumed to have contents of the message already
     * read in.  It must have 12 bytes of space at the beginning for the GIOP header,
     * but the header doesn't have to be copied in.
     */
    public void unmarshalRequestID(ByteBuffer byteBuffer) {
        int b1, b2, b3, b4;

        if (!isLittleEndian()) {
            b1 = (byteBuffer.get(GIOPMessageHeaderLength+0) << 24) & 0xFF000000;
            b2 = (byteBuffer.get(GIOPMessageHeaderLength+1) << 16) & 0x00FF0000;
            b3 = (byteBuffer.get(GIOPMessageHeaderLength+2) << 8)  & 0x0000FF00;
            b4 = (byteBuffer.get(GIOPMessageHeaderLength+3) << 0)  & 0x000000FF;
        } else {
            b1 = (byteBuffer.get(GIOPMessageHeaderLength+3) << 24) & 0xFF000000;
            b2 = (byteBuffer.get(GIOPMessageHeaderLength+2) << 16) & 0x00FF0000;
            b3 = (byteBuffer.get(GIOPMessageHeaderLength+1) << 8)  & 0x0000FF00;
            b4 = (byteBuffer.get(GIOPMessageHeaderLength+0) << 0)  & 0x000000FF;
        }

        this.request_id = (b1 | b2 | b3 | b4);
    }

    public void write(org.omg.CORBA.portable.OutputStream ostream) {
        if (this.encodingVersion == Message.CDR_ENC_VERSION) {
            super.write(ostream);
            return;
        }
        GIOPVersion gv = this.GIOP_version; // save
        this.GIOP_version = GIOPVersion.getInstance((byte)13,
                                                    this.encodingVersion);
        super.write(ostream);
        this.GIOP_version = gv; // restore
    }
}

⏎ com/sun/corba/se/impl/protocol/giopmsgheaders/Message_1_2.java

Or download all of them as a single archive file:

File name: jre-rt-com-1.8.0_191-src.zip
File size: 8099783 bytes
Release date: 2018-10-28
Download 

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