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/RepIdDelegator.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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 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

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

import org.omg.CORBA.ORB;
import java.io.Serializable;
import java.util.Hashtable;
import com.sun.corba.se.impl.io.TypeMismatchException;
import java.net.MalformedURLException;
import com.sun.corba.se.impl.util.RepositoryId;

/**
 * Delegates to the current RepositoryId implementation in
 * com.sun.corba.se.impl.util.  This is necessary to
 * overcome the fact that many of RepositoryId's methods
 * are static.
 */
public final class RepIdDelegator
    implements RepositoryIdStrings,
               RepositoryIdUtility,
               RepositoryIdInterface
{
    // RepositoryIdFactory methods

    public String createForAnyType(Class type) {
        return RepositoryId.createForAnyType(type);
    }

    public String createForJavaType(Serializable ser)
        throws TypeMismatchException
    {
        return RepositoryId.createForJavaType(ser);
    }

    public String createForJavaType(Class clz)
        throws TypeMismatchException
    {
        return RepositoryId.createForJavaType(clz);
    }

    public String createSequenceRepID(java.lang.Object ser) {
        return RepositoryId.createSequenceRepID(ser);
    }

    public String createSequenceRepID(Class clazz) {
        return RepositoryId.createSequenceRepID(clazz);
    }

    public RepositoryIdInterface getFromString(String repIdString) {
        return new RepIdDelegator(RepositoryId.cache.getId(repIdString));
    }

    // RepositoryIdUtility methods

    public boolean isChunkedEncoding(int valueTag) {
        return RepositoryId.isChunkedEncoding(valueTag);
    }

    public boolean isCodeBasePresent(int valueTag) {
        return RepositoryId.isCodeBasePresent(valueTag);
    }

    public String getClassDescValueRepId() {
        return RepositoryId.kClassDescValueRepID;
    }

    public String getWStringValueRepId() {
        return RepositoryId.kWStringValueRepID;
    }

    public int getTypeInfo(int valueTag) {
        return RepositoryId.getTypeInfo(valueTag);
    }

    public int getStandardRMIChunkedNoRepStrId() {
        return RepositoryId.kPreComputed_StandardRMIChunked_NoRep;
    }

    public int getCodeBaseRMIChunkedNoRepStrId() {
        return RepositoryId.kPreComputed_CodeBaseRMIChunked_NoRep;
    }

    public int getStandardRMIChunkedId() {
        return RepositoryId.kPreComputed_StandardRMIChunked;
    }

    public int getCodeBaseRMIChunkedId() {
        return RepositoryId.kPreComputed_CodeBaseRMIChunked;
    }

    public int getStandardRMIUnchunkedId() {
        return RepositoryId.kPreComputed_StandardRMIUnchunked;
    }

    public int getCodeBaseRMIUnchunkedId() {
        return RepositoryId.kPreComputed_CodeBaseRMIUnchunked;
    }

    public int getStandardRMIUnchunkedNoRepStrId() {
        return RepositoryId.kPreComputed_StandardRMIUnchunked_NoRep;
    }

    public int getCodeBaseRMIUnchunkedNoRepStrId() {
        return RepositoryId.kPreComputed_CodeBaseRMIUnchunked_NoRep;
    }

    // RepositoryIdInterface methods

    public Class getClassFromType() throws ClassNotFoundException {
        return delegate.getClassFromType();
    }

    public Class getClassFromType(String codebaseURL)
        throws ClassNotFoundException, MalformedURLException
    {
        return delegate.getClassFromType(codebaseURL);
    }

    public Class getClassFromType(Class expectedType,
                                  String codebaseURL)
        throws ClassNotFoundException, MalformedURLException
    {
        return delegate.getClassFromType(expectedType, codebaseURL);
    }

    public String getClassName() {
        return delegate.getClassName();
    }

    // Constructor used for factory/utility cases
    public RepIdDelegator() {
        this(null);
    }

    // Constructor used by getIdFromString.  All non-static
    // RepositoryId methods will use the provided delegate.
    private RepIdDelegator(RepositoryId _delegate) {
        this.delegate = _delegate;
    }

    private final RepositoryId delegate;

    public String toString() {
        if (delegate != null)
            return delegate.toString();
        else
            return this.getClass().getName();
    }

    public boolean equals(Object obj) {
        if (delegate != null)
            return delegate.equals(obj);
        else
            return super.equals(obj);
    }

    public int hashCode() {
        if (delegate != null) {
            return delegate.hashCode();
        } else {
            return super.hashCode();
        }
    }
}

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