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

⏎ org/omg/CORBA/DynEnum.java

/*
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 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package org.omg.CORBA;

/** Represents a <tt>DynAny</tt> object  associated
 *  with an IDL enum.
 * @deprecated Use the new <a href="../DynamicAny/DynEnum.html">DynEnum</a> instead
 */
@Deprecated
public interface DynEnum extends org.omg.CORBA.Object, org.omg.CORBA.DynAny
{
    /**
     * Return the value of the IDL enum stored in this
     * <code>DynEnum</code> as a string.
     *
     * @return the stringified value.
     */
    public String value_as_string();

    /**
     * Set a particular enum in this <code>DynEnum</code>.
     *
     * @param arg the string corresponding to the value.
     */
    public void value_as_string(String arg);

    /**
     * Return the value of the IDL enum as a Java int.
     *
     * @return the integer value.
     */
    public int value_as_ulong();

    /**
     * Set the value of the IDL enum.
     *
     * @param arg the int value of the enum.
     */
    public void value_as_ulong(int arg);
}

⏎ org/omg/CORBA/DynEnum.java

Or download all of them as a single archive file:

File name: jre-rt-org-1.8.0_191-src.zip
File size: 951125 bytes
Release date: 2018-10-28
Download 

⇒ JRE 8 rt.jar - com.* Package Source Code

⇐ JRE 8 rt.jar - javax.* Package Source Code

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