JDK 11 java.prefs.jmod is the JMOD file for JDK 11 Prefs module.

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

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

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

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

⏎ module-info.java

/*
 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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/**
 * Defines the Preferences API.
 *
 * @uses java.util.prefs.PreferencesFactory
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 * @moduleGraph
 * @since 9
 */
module java.prefs {
    requires java.xml;

    exports java.util.prefs;

    uses java.util.prefs.PreferencesFactory;
}

⏎ module-info.java

Or download all of them as a single archive file:

File name: java.prefs-11.0.1-src.zip
File size: 45946 bytes
Release date: 2018-11-04
Download 

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