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/print/attribute/standard/MediaName.java

/*
 * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package javax.print.attribute.standard;

import java.util.Locale;
import javax.print.attribute.Attribute;
import javax.print.attribute.EnumSyntax;

/**
 * Class MediaName is a subclass of Media, a printing attribute class (an
 * enumeration) that specifies the media for a print job as a name.
 * <P>
 * This attribute can be used instead of specifying MediaSize or MediaTray.
 * <p>
 * Class MediaName currently declares a few standard media names.
 * Implementation- or site-defined names for a media name attribute may also
 * be created by defining a subclass of class MediaName.
 * <P>
 * <B>IPP Compatibility:</B> MediaName is a representation class for
 * values of the IPP "media" attribute which names media.
 * <P>
 *
 */
public class MediaName extends Media implements Attribute {

    private static final long serialVersionUID = 4653117714524155448L;

    /**
     *  white letter paper.
     */
    public static final MediaName NA_LETTER_WHITE = new MediaName(0);

    /**
     *  letter transparency.
     */
    public static final MediaName NA_LETTER_TRANSPARENT = new MediaName(1);

    /**
     * white A4 paper.
     */
    public static final MediaName ISO_A4_WHITE = new MediaName(2);


    /**
     *  A4 transparency.
     */
    public static final MediaName ISO_A4_TRANSPARENT= new MediaName(3);


    /**
     * Constructs a new media name enumeration value with the given integer
     * value.
     *
     * @param  value  Integer value.
     */
    protected MediaName(int value) {
        super (value);
    }

    private static final String[] myStringTable = {
        "na-letter-white",
        "na-letter-transparent",
        "iso-a4-white",
        "iso-a4-transparent"
    };

    private static final MediaName[] myEnumValueTable = {
        NA_LETTER_WHITE,
        NA_LETTER_TRANSPARENT,
        ISO_A4_WHITE,
        ISO_A4_TRANSPARENT
    };

    /**
     * Returns the string table for class MediaTray.
     * @return the String table.
     */
    protected String[] getStringTable()
    {
        return (String[])myStringTable.clone();
    }

    /**
     * Returns the enumeration value table for class MediaTray.
     * @return the enumeration value table.
     */
    protected EnumSyntax[] getEnumValueTable() {
        return (EnumSyntax[])myEnumValueTable.clone();
    }

}

⏎ javax/print/attribute/standard/MediaName.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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