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/accessibility/AccessibleEditableText.java

/*
 * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package javax.accessibility;

import java.util.*;
import java.awt.*;
import javax.swing.text.*;

/**
 * <P>The AccessibleEditableText interface should be implemented by all
 * classes that present editable textual information on the display.
 * Along with the AccessibleText interface, this interface provides
 * the standard mechanism for an assistive technology to access
 * that text via its content, attributes, and spatial location.
 * Applications can determine if an object supports the AccessibleEditableText
 * interface by first obtaining its AccessibleContext (see {@link Accessible})
 * and then calling the {@link AccessibleContext#getAccessibleEditableText}
 * method of AccessibleContext.  If the return value is not null, the object
 * supports this interface.
 *
 * @see Accessible
 * @see Accessible#getAccessibleContext
 * @see AccessibleContext
 * @see AccessibleContext#getAccessibleText
 * @see AccessibleContext#getAccessibleEditableText
 *
 * @author      Lynn Monsanto
 * @since 1.4
 */

public interface AccessibleEditableText extends AccessibleText {

    /**
     * Sets the text contents to the specified string.
     *
     * @param s the string to set the text contents
     */
    public void setTextContents(String s);

    /**
     * Inserts the specified string at the given index/
     *
     * @param index the index in the text where the string will
     * be inserted
     * @param s the string to insert in the text
     */
    public void insertTextAtIndex(int index, String s);

    /**
     * Returns the text string between two indices.
     *
     * @param startIndex the starting index in the text
     * @param endIndex the ending index in the text
     * @return the text string between the indices
     */
    public String getTextRange(int startIndex, int endIndex);

    /**
     * Deletes the text between two indices
     *
     * @param startIndex the starting index in the text
     * @param endIndex the ending index in the text
     */
    public void delete(int startIndex, int endIndex);

    /**
     * Cuts the text between two indices into the system clipboard.
     *
     * @param startIndex the starting index in the text
     * @param endIndex the ending index in the text
     */
    public void cut(int startIndex, int endIndex);

    /**
     * Pastes the text from the system clipboard into the text
     * starting at the specified index.
     *
     * @param startIndex the starting index in the text
     */
    public void paste(int startIndex);

    /**
     * Replaces the text between two indices with the specified
     * string.
     *
     * @param startIndex the starting index in the text
     * @param endIndex the ending index in the text
     * @param s the string to replace the text between two indices
     */
    public void replaceText(int startIndex, int endIndex, String s);

    /**
     * Selects the text between two indices.
     *
     * @param startIndex the starting index in the text
     * @param endIndex the ending index in the text
     */
    public void selectText(int startIndex, int endIndex);

    /**
     * Sets attributes for the text between two indices.
     *
     * @param startIndex the starting index in the text
     * @param endIndex the ending index in the text
     * @param as the attribute set
     * @see AttributeSet
     */
    public void setAttributes(int startIndex, int endIndex, AttributeSet as);

}

⏎ javax/accessibility/AccessibleEditableText.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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