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/orbutil/RepositoryIdUtility.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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package com.sun.corba.se.impl.orbutil;

import org.omg.CORBA.ORB;
import com.sun.corba.se.impl.util.RepositoryId;

/**
 * Utility methods for working with repository IDs.
 */
public interface RepositoryIdUtility
{
    boolean isChunkedEncoding(int valueTag);
    boolean isCodeBasePresent(int valueTag);

    // These are currently the same in both RepositoryId and
    // RepositoryId_1_3, but provide the constants again here
    // to eliminate awkardness when using this interface.
    int NO_TYPE_INFO = RepositoryId.kNoTypeInfo;
    int SINGLE_REP_TYPE_INFO = RepositoryId.kSingleRepTypeInfo;
    int PARTIAL_LIST_TYPE_INFO = RepositoryId.kPartialListTypeInfo;

    // Determine how many (if any) repository IDs follow the value
    // tag.
    int getTypeInfo(int valueTag);

    // Accessors for precomputed value tags
    int getStandardRMIChunkedNoRepStrId();
    int getCodeBaseRMIChunkedNoRepStrId();
    int getStandardRMIChunkedId();
    int getCodeBaseRMIChunkedId();
    int getStandardRMIUnchunkedId();
    int getCodeBaseRMIUnchunkedId();
    int getStandardRMIUnchunkedNoRepStrId();
    int getCodeBaseRMIUnchunkedNoRepStrId();
}

⏎ com/sun/corba/se/impl/orbutil/RepositoryIdUtility.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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