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/NotQueryExp.java

/*
 * Copyright (c) 1999, 2008, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package javax.management;


/**
 * This class is used by the query-building mechanism to represent negations
 * of relational expressions.
 * @serial include
 *
 * @since 1.5
 */
class NotQueryExp extends QueryEval implements QueryExp {


    /* Serial version */
    private static final long serialVersionUID = 5269643775896723397L;

    /**
     * @serial The negated {@link QueryExp}
     */
    private QueryExp exp;


    /**
     * Basic Constructor.
     */
    public NotQueryExp() {
    }

    /**
     * Creates a new NotQueryExp for negating the specified QueryExp.
     */
    public NotQueryExp(QueryExp q) {
        exp = q;
    }


    /**
     * Returns the negated query expression of the query.
     */
    public QueryExp getNegatedExp()  {
        return exp;
    }

    /**
     * Applies the NotQueryExp on a MBean.
     *
     * @param name The name of the MBean on which the NotQueryExp will be applied.
     *
     * @return  True if the query was successfully applied to the MBean, false otherwise.
     *
     * @exception BadStringOperationException
     * @exception BadBinaryOpValueExpException
     * @exception BadAttributeValueExpException
     * @exception InvalidApplicationException
     */
    public boolean apply(ObjectName name) throws BadStringOperationException, BadBinaryOpValueExpException,
        BadAttributeValueExpException, InvalidApplicationException  {
        return exp.apply(name) == false;
    }

    /**
     * Returns the string representing the object.
     */
    @Override
    public String toString()  {
        return "not (" + exp + ")";
    }
 }

⏎ javax/management/NotQueryExp.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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