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/PolicyError.java

/*
 * Copyright (c) 1998, 2000, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package org.omg.CORBA;

/**
* A user exception thrown when a policy error occurs.  A <code>PolicyError</code>
* exception may include one of the following policy error reason codes
* defined in the org.omg.CORBA package: BAD_POLICY, BAD_POLICY_TYPE,
* BAD_POLICY_VALUE, UNSUPPORTED_POLICY, UNSUPPORTED_POLICY_VALUE.
*/

public final class PolicyError extends org.omg.CORBA.UserException {

    /**
     * The reason for the <code>PolicyError</code> exception being thrown.
     * @serial
     */
    public short reason;

    /**
     * Constructs a default <code>PolicyError</code> user exception
     * with no reason code and an empty reason detail message.
     */
    public PolicyError() {
        super();
    }

    /**
     * Constructs a <code>PolicyError</code> user exception
     * initialized with the given reason code and an empty reason detail message.
     * @param __reason the reason code.
     */
    public PolicyError(short __reason) {
        super();
        reason = __reason;
    }

    /**
     * Constructs a <code>PolicyError</code> user exception
     * initialized with the given reason detail message and reason code.
     * @param reason_string the reason detail message.
     * @param __reason the reason code.
     */
    public PolicyError(String reason_string, short __reason) {
        super(reason_string);
        reason = __reason;
    }
}

⏎ org/omg/CORBA/PolicyError.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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