JDK 1.1 source code directory contains Java source code for JDK 1.1 core classes: "C:\fyicenter\jdk-1.1.8\src".

Here is the list of Java classes of the JDK 1.1 source code:

⏎ java/lang/RuntimeException.java

/*
 * @(#)RuntimeException.java	1.6 01/12/10
 *
 * Copyright 2002 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package java.lang;

/**
 * <code>RuntimeException</code> is the superclass of those 
 * exceptions that can be thrown during the normal operation of the 
 * Java Virtual Machine. 
 * <p>
 * A method is not required to declare in its <code>throws</code> 
 * clause any subclasses of <code>RuntimeException</code> that might 
 * be thrown during the execution of the method but not caught. 
 *
 *
 * @author  Frank Yellin
 * @version 1.6, 12/10/01
 * @since   JDK1.0
 */
public
class RuntimeException extends Exception {
    /**
     * Constructs a <code>RuntimeException</code> with no detail  message.
     *
     * @since   JDK1.0
     */
    public RuntimeException() {
	super();
    }

    /**
     * Constructs a <code>RuntimeException</code> with the specified 
     * detail message. 
     *
     * @param   s   the detail message.
     * @since   JDK1.0
     */
    public RuntimeException(String s) {
	super(s);
    }
}

⏎ java/lang/RuntimeException.java

Or download all of them as a single archive file:

File name: jdk-1.1.8-src.zip
File size: 1574187 bytes
Release date: 2018-11-16
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