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

⏎ java/sql/ClientInfoStatus.java

/*
 * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package java.sql;

import java.util.*;

/**
 * Enumeration for status of the reason that a property could not be set
 * via a call to <code>Connection.setClientInfo</code>
 * @since 1.6
 */

public enum ClientInfoStatus {

    /**
     * The client info property could not be set for some unknown reason
     * @since 1.6
     */
    REASON_UNKNOWN,

    /**
     * The client info property name specified was not a recognized property
     * name.
     * @since 1.6
     */
    REASON_UNKNOWN_PROPERTY,

    /**
     * The value specified for the client info property was not valid.
     * @since 1.6
     */
    REASON_VALUE_INVALID,

    /**
     * The value specified for the client info property was too large.
     * @since 1.6
     */
    REASON_VALUE_TRUNCATED
}

⏎ java/sql/ClientInfoStatus.java

Or download all of them as a single archive file:

File name: jre-rt-java-1.8.0_191-src.zip
File size: 6664831 bytes
Release date: 2018-10-28
Download 

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