JDK 11 java.base.jmod is the JMOD file for JDK 11 Base module.

JDK 11 Base module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\java.base.jmod.

JDK 11 Base module compiled class files are also linked and stored in the \fyicenter\jdk-11.0.1\lib\modules JImage file.

JDK 11 Base module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\java.base.

You can click and view the content of each source code file in the list below.

⏎ java/lang/CloneNotSupportedException.java

/*
 * Copyright (c) 1995, 2008, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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package java.lang;

/**
 * Thrown to indicate that the <code>clone</code> method in class
 * <code>Object</code> has been called to clone an object, but that
 * the object's class does not implement the <code>Cloneable</code>
 * interface.
 * <p>
 * Applications that override the <code>clone</code> method can also
 * throw this exception to indicate that an object could not or
 * should not be cloned.
 *
 * @author  unascribed
 * @see     java.lang.Cloneable
 * @see     java.lang.Object#clone()
 * @since   1.0
 */

public
class CloneNotSupportedException extends Exception {
    private static final long serialVersionUID = 5195511250079656443L;

    /**
     * Constructs a <code>CloneNotSupportedException</code> with no
     * detail message.
     */
    public CloneNotSupportedException() {
        super();
    }

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

⏎ java/lang/CloneNotSupportedException.java

Or download all of them as a single archive file:

File name: java.base-11.0.1-src.zip
File size: 8740354 bytes
Release date: 2018-11-04
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