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 com.* package in JRE 1.8.0_191 rt.jar. Java source codes are also provided.

⏎ com/sun/org/apache/xerces/internal/impl/xs/opti/NodeImpl.java

/*
 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 2001, 2002,2004 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sun.org.apache.xerces.internal.impl.xs.opti;

/**
 * @xerces.internal
 *
 * @author Rahul Srivastava, Sun Microsystems Inc.
 *
 */
public class NodeImpl extends DefaultNode {

    String prefix;
    String localpart;
    String rawname;
    String uri;
    short nodeType;
    boolean hidden;


    public NodeImpl() {
    }


    public NodeImpl(String prefix, String localpart, String rawname, String uri, short nodeType) {
        this.prefix = prefix;
        this.localpart = localpart;
        this.rawname = rawname;
        this.uri = uri;
        this.nodeType = nodeType;
    }


    public String getNodeName() {
        return rawname;
    }


    public String getNamespaceURI() {
        return uri;
    }


    public String getPrefix() {
        return prefix;
    }


    public String getLocalName() {
        return localpart;
    }


    public short getNodeType() {
        return nodeType;
    }


    // other methods

    public void setReadOnly(boolean hide, boolean deep) {
        hidden = hide;
    }


    public boolean getReadOnly() {
        return hidden;
    }
}

⏎ com/sun/org/apache/xerces/internal/impl/xs/opti/NodeImpl.java

Or download all of them as a single archive file:

File name: jre-rt-com-1.8.0_191-src.zip
File size: 8099783 bytes
Release date: 2018-10-28
Download 

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