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

⏎ javax/management/BadBinaryOpValueExpException.java

/*
 * Copyright (c) 1999, 2003, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package javax.management;


/**
 * Thrown when an invalid expression is passed to a method for
 * constructing a query.  This exception is used internally by JMX
 * during the evaluation of a query.  User code does not usually see
 * it.
 *
 * @since 1.5
 */
public class BadBinaryOpValueExpException extends Exception   {


    /* Serial version */
    private static final long serialVersionUID = 5068475589449021227L;

    /**
     * @serial the {@link ValueExp} that originated this exception
     */
    private ValueExp exp;


    /**
     * Constructs a <CODE>BadBinaryOpValueExpException</CODE> with the specified <CODE>ValueExp</CODE>.
     *
     * @param exp the expression whose value was inappropriate.
     */
    public BadBinaryOpValueExpException(ValueExp exp) {
        this.exp = exp;
    }


    /**
     * Returns the <CODE>ValueExp</CODE> that originated the exception.
     *
     * @return the problematic {@link ValueExp}.
     */
    public ValueExp getExp()  {
        return exp;
    }

    /**
     * Returns the string representing the object.
     */
    public String toString()  {
        return "BadBinaryOpValueExpException: " + exp;
    }

 }

⏎ javax/management/BadBinaryOpValueExpException.java

Or download all of them as a single archive file:

File name: jre-rt-javax-1.8.0_191-src.zip
File size: 5381005 bytes
Release date: 2018-10-28
Download 

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

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

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