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/jaxp/validation/SimpleXMLSchema.java

/*
 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 2005 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.jaxp.validation;

import com.sun.org.apache.xerces.internal.xni.grammars.Grammar;
import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarDescription;
import com.sun.org.apache.xerces.internal.xni.grammars.XMLGrammarPool;

/**
 * <p>Implementation of Schema for W3C XML Schemas which
 * contains schema components from one target namespace.</p>
 *
 * @author Michael Glavassevich, IBM
 */
final class SimpleXMLSchema extends AbstractXMLSchema implements XMLGrammarPool {

    /** Zero length grammar array. */
    private static final Grammar [] ZERO_LENGTH_GRAMMAR_ARRAY = new Grammar [0];

    private Grammar fGrammar;
    private Grammar[] fGrammars;
    private XMLGrammarDescription fGrammarDescription;

    public SimpleXMLSchema(Grammar grammar) {
        fGrammar = grammar;
        fGrammars = new Grammar[] {grammar};
        fGrammarDescription = grammar.getGrammarDescription();
    }

    /*
     * XMLGrammarPool methods
     */

    public Grammar[] retrieveInitialGrammarSet(String grammarType) {
        return XMLGrammarDescription.XML_SCHEMA.equals(grammarType) ?
                (Grammar[]) fGrammars.clone() : ZERO_LENGTH_GRAMMAR_ARRAY;
    }

    public void cacheGrammars(String grammarType, Grammar[] grammars) {}

    public Grammar retrieveGrammar(XMLGrammarDescription desc) {
        return fGrammarDescription.equals(desc) ? fGrammar : null;
    }

    public void lockPool() {}

    public void unlockPool() {}

    public void clear() {}

    /*
     * XSGrammarPoolContainer methods
     */

    public XMLGrammarPool getGrammarPool() {
        return this;
    }

    public boolean isFullyComposed() {
        return true;
    }

} // SimpleXMLSchema

⏎ com/sun/org/apache/xerces/internal/jaxp/validation/SimpleXMLSchema.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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