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/util/SimpleLocator.java

/*
 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */
/*
 * Copyright 2002, 2003,2004 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.util;

import com.sun.org.apache.xerces.internal.xni.XMLLocator;

/**
 * An XMLLocator implementation used for schema error reporting.
 *
 * @xerces.internal
 *
 * @author Sandy Gao, IBM
 */
public class SimpleLocator implements XMLLocator {

    String lsid, esid;
    int line, column;
    int charOffset;

    public SimpleLocator() {
    }

    public SimpleLocator(String lsid, String esid, int line, int column) {
        this(lsid, esid, line, column, -1);
    }

    public void setValues(String lsid, String esid, int line, int column) {
        setValues(lsid, esid, line, column, -1);
    }

    public SimpleLocator(String lsid, String esid, int line, int column, int offset) {
        this.line = line;
        this.column = column;
        this.lsid = lsid;
        this.esid = esid;
        charOffset = offset;
    }

    public void setValues(String lsid, String esid, int line, int column, int offset) {
        this.line = line;
        this.column = column;
        this.lsid = lsid;
        this.esid = esid;
        charOffset = offset;
    }

    public int getLineNumber() {
        return line;
    }

    public int getColumnNumber() {
        return column;
    }

    public int getCharacterOffset() {
        return charOffset;
    }

    public String getPublicId() {
        return null;
    }

    public String getExpandedSystemId() {
        return esid;
    }

    public String getLiteralSystemId() {
        return lsid;
    }

    public String getBaseSystemId() {
        return null;
    }
    /**
     * @see com.sun.org.apache.xerces.internal.xni.XMLLocator#setColumnNumber(int)
     */
    public void setColumnNumber(int col) {
        this.column = col;
    }

    /**
     * @see com.sun.org.apache.xerces.internal.xni.XMLLocator#setLineNumber(int)
     */
    public void setLineNumber(int line) {
        this.line = line;
    }

    public void setCharacterOffset(int offset) {
        charOffset = offset;
    }

    /**
     * @see com.sun.org.apache.xerces.internal.xni.XMLResourceIdentifier#setBaseSystemId(String)
     */
    public void setBaseSystemId(String systemId) {}

    /**
     * @see com.sun.org.apache.xerces.internal.xni.XMLResourceIdentifier#setExpandedSystemId(String)
     */
    public void setExpandedSystemId(String systemId) {
        esid = systemId;
    }

    /**
     * @see com.sun.org.apache.xerces.internal.xni.XMLResourceIdentifier#setLiteralSystemId(String)
     */
    public void setLiteralSystemId(String systemId) {
        lsid = systemId;
    }

    /**
     * @see com.sun.org.apache.xerces.internal.xni.XMLResourceIdentifier#setPublicId(String)
     */
    public void setPublicId(String publicId) {}

    /** Returns the encoding of the current entity.
     * Since these locators are used in the construction of
     * XMLParseExceptions, which know nothing about encodings, there is
     * no point in having this object deal intelligently
     * with encoding information.
     */
    public String getEncoding() {
        return null;
    }

    public String getXMLVersion() {
        return null;
    }
}

⏎ com/sun/org/apache/xerces/internal/impl/xs/util/SimpleLocator.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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