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/remote/SubjectDelegationPermission.java

/*
 * Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 *
 */

package javax.management.remote;

import java.security.BasicPermission;

/**
 * <p>Permission required by an authentication identity to perform
 * operations on behalf of an authorization identity.</p>
 *
 * <p>A SubjectDelegationPermission contains a name (also referred
 * to as a "target name") but no actions list; you either have the
 * named permission or you don't.</p>
 *
 * <p>The target name is the name of the authorization principal
 * classname followed by a period and the authorization principal
 * name, that is
 * <code>"<em>PrincipalClassName</em>.<em>PrincipalName</em>"</code>.</p>
 *
 * <p>An asterisk may appear by itself, or if immediately preceded
 * by a "." may appear at the end of the target name, to signify a
 * wildcard match.</p>
 *
 * <p>For example, "*", "javax.management.remote.JMXPrincipal.*" and
 * "javax.management.remote.JMXPrincipal.delegate" are valid target
 * names. The first one denotes any principal name from any principal
 * class, the second one denotes any principal name of the concrete
 * principal class <code>javax.management.remote.JMXPrincipal</code>
 * and the third one denotes a concrete principal name
 * <code>delegate</code> of the concrete principal class
 * <code>javax.management.remote.JMXPrincipal</code>.</p>
 *
 * @since 1.5
 */
public final class SubjectDelegationPermission extends BasicPermission {

    private static final long serialVersionUID = 1481618113008682343L;

    /**
     * Creates a new SubjectDelegationPermission with the specified name.
     * The name is the symbolic name of the SubjectDelegationPermission.
     *
     * @param name the name of the SubjectDelegationPermission
     *
     * @throws NullPointerException if <code>name</code> is
     * <code>null</code>.
     * @throws IllegalArgumentException if <code>name</code> is empty.
     */
    public SubjectDelegationPermission(String name) {
        super(name);
    }

    /**
     * Creates a new SubjectDelegationPermission object with the
     * specified name.  The name is the symbolic name of the
     * SubjectDelegationPermission, and the actions String is
     * currently unused and must be null.
     *
     * @param name the name of the SubjectDelegationPermission
     * @param actions must be null.
     *
     * @throws NullPointerException if <code>name</code> is
     * <code>null</code>.
     * @throws IllegalArgumentException if <code>name</code> is empty
     * or <code>actions</code> is not null.
     */
    public SubjectDelegationPermission(String name, String actions) {
        super(name, actions);

        if (actions != null)
            throw new IllegalArgumentException("Non-null actions");
    }
}

⏎ javax/management/remote/SubjectDelegationPermission.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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