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/w3c/dom/ls/LSOutput.java

/*
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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/*
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 * Copyright (c) 2004 World Wide Web Consortium,
 *
 * (Massachusetts Institute of Technology, European Research Consortium for
 * Informatics and Mathematics, Keio University). All Rights Reserved. This
 * work is distributed under the W3C(r) Software License [1] in the hope that
 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
 */

package org.w3c.dom.ls;

/**
 *  This interface represents an output destination for data.
 * <p> This interface allows an application to encapsulate information about
 * an output destination in a single object, which may include a URI, a byte
 * stream (possibly with a specified encoding), a base URI, and/or a
 * character stream.
 * <p> The exact definitions of a byte stream and a character stream are
 * binding dependent.
 * <p> The application is expected to provide objects that implement this
 * interface whenever such objects are needed. The application can either
 * provide its own objects that implement this interface, or it can use the
 * generic factory method <code>DOMImplementationLS.createLSOutput()</code>
 * to create objects that implement this interface.
 * <p> The <code>LSSerializer</code> will use the <code>LSOutput</code> object
 * to determine where to serialize the output to. The
 * <code>LSSerializer</code> will look at the different outputs specified in
 * the <code>LSOutput</code> in the following order to know which one to
 * output to, the first one that is not null and not an empty string will be
 * used:
 * <ol>
 * <li> <code>LSOutput.characterStream</code>
 * </li>
 * <li>
 * <code>LSOutput.byteStream</code>
 * </li>
 * <li> <code>LSOutput.systemId</code>
 * </li>
 * </ol>
 * <p> <code>LSOutput</code> objects belong to the application. The DOM
 * implementation will never modify them (though it may make copies and
 * modify the copies, if necessary).
 * <p>See also the <a href='http://www.w3.org/TR/2004/REC-DOM-Level-3-LS-20040407'>Document Object Model (DOM) Level 3 Load
and Save Specification</a>.
 */
public interface LSOutput {
    /**
     *  An attribute of a language and binding dependent type that represents
     * a writable stream to which 16-bit units can be output.
     */
    public java.io.Writer getCharacterStream();
    /**
     *  An attribute of a language and binding dependent type that represents
     * a writable stream to which 16-bit units can be output.
     */
    public void setCharacterStream(java.io.Writer characterStream);

    /**
     *  An attribute of a language and binding dependent type that represents
     * a writable stream of bytes.
     */
    public java.io.OutputStream getByteStream();
    /**
     *  An attribute of a language and binding dependent type that represents
     * a writable stream of bytes.
     */
    public void setByteStream(java.io.OutputStream byteStream);

    /**
     *  The system identifier, a URI reference [<a href='http://www.ietf.org/rfc/rfc2396.txt'>IETF RFC 2396</a>], for this
     * output destination.
     * <br> If the system ID is a relative URI reference (see section 5 in [<a href='http://www.ietf.org/rfc/rfc2396.txt'>IETF RFC 2396</a>]), the
     * behavior is implementation dependent.
     */
    public String getSystemId();
    /**
     *  The system identifier, a URI reference [<a href='http://www.ietf.org/rfc/rfc2396.txt'>IETF RFC 2396</a>], for this
     * output destination.
     * <br> If the system ID is a relative URI reference (see section 5 in [<a href='http://www.ietf.org/rfc/rfc2396.txt'>IETF RFC 2396</a>]), the
     * behavior is implementation dependent.
     */
    public void setSystemId(String systemId);

    /**
     *  The character encoding to use for the output. The encoding must be a
     * string acceptable for an XML encoding declaration ([<a href='http://www.w3.org/TR/2004/REC-xml-20040204'>XML 1.0</a>] section
     * 4.3.3 "Character Encoding in Entities"), it is recommended that
     * character encodings registered (as charsets) with the Internet
     * Assigned Numbers Authority [<a href='ftp://ftp.isi.edu/in-notes/iana/assignments/character-sets'>IANA-CHARSETS</a>]
     *  should be referred to using their registered names.
     */
    public String getEncoding();
    /**
     *  The character encoding to use for the output. The encoding must be a
     * string acceptable for an XML encoding declaration ([<a href='http://www.w3.org/TR/2004/REC-xml-20040204'>XML 1.0</a>] section
     * 4.3.3 "Character Encoding in Entities"), it is recommended that
     * character encodings registered (as charsets) with the Internet
     * Assigned Numbers Authority [<a href='ftp://ftp.isi.edu/in-notes/iana/assignments/character-sets'>IANA-CHARSETS</a>]
     *  should be referred to using their registered names.
     */
    public void setEncoding(String encoding);

}

⏎ org/w3c/dom/ls/LSOutput.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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