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/sql/rowset/RowSetFactory.java

/*
 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package javax.sql.rowset;

import java.sql.SQLException;

/**
 * An interface that defines the implementation of a factory that is used
 * to obtain different types of {@code RowSet} implementations.
 *
 * @author Lance Andersen
 * @since 1.7
 */
public interface RowSetFactory{

    /**
     * <p>Creates a new instance of a CachedRowSet.</p>
     *
     * @return A new instance of a CachedRowSet.
     *
     * @throws SQLException if a CachedRowSet cannot
     *   be created.
     *
     * @since 1.7
     */
    public CachedRowSet createCachedRowSet() throws SQLException;

    /**
     * <p>Creates a new instance of a FilteredRowSet.</p>
     *
     * @return A new instance of a FilteredRowSet.
     *
     * @throws SQLException if a FilteredRowSet cannot
     *   be created.
     *
     * @since 1.7
     */
    public FilteredRowSet createFilteredRowSet() throws SQLException;

    /**
     * <p>Creates a new instance of a JdbcRowSet.</p>
     *
     * @return A new instance of a JdbcRowSet.
     *
     * @throws SQLException if a JdbcRowSet cannot
     *   be created.
     *
     * @since 1.7
     */
    public  JdbcRowSet createJdbcRowSet() throws SQLException;

    /**
     * <p>Creates a new instance of a JoinRowSet.</p>
     *
     * @return A new instance of a JoinRowSet.
     *
     * @throws SQLException if a JoinRowSet cannot
     *   be created.
     *
     * @since 1.7
     */
    public  JoinRowSet createJoinRowSet() throws SQLException;

    /**
     * <p>Creates a new instance of a WebRowSet.</p>
     *
     * @return A new instance of a WebRowSet.
     *
     * @throws SQLException if a WebRowSet cannot
     *   be created.
     *
     * @since 1.7
     */
    public  WebRowSet createWebRowSet() throws SQLException;

}

⏎ javax/sql/rowset/RowSetFactory.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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