JDK 11 jdk.management.jmod is the JMOD file for JDK 11 Management module.

JDK 11 Management module compiled class files are stored in \fyicenter\jdk-11.0.1\jmods\jdk.management.jmod.

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

JDK 11 Management module source code files are stored in \fyicenter\jdk-11.0.1\lib\src.zip\jdk.management.

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

⏎ com/sun/management/UnixOperatingSystemMXBean.java

/*
 * Copyright (c) 2003, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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package com.sun.management;

/**
 * Platform-specific management interface for the Unix
 * operating system on which the Java virtual machine is running.
 *
 * @author  Mandy Chung
 * @since   1.5
 */
public interface UnixOperatingSystemMXBean extends
    com.sun.management.OperatingSystemMXBean {

    /**
     * Returns the number of open file descriptors.
     *
     * @return the number of open file descriptors.
     */
    public long getOpenFileDescriptorCount();

    /**
     * Returns the maximum number of file descriptors.
     *
     * @return the maximum number of file descriptors.
     */
    public long getMaxFileDescriptorCount();
}

⏎ com/sun/management/UnixOperatingSystemMXBean.java

Or download all of them as a single archive file:

File name: jdk.management-11.0.1-src.zip
File size: 38186 bytes
Release date: 2018-11-04
Download 

⇒ JDK 11 jdk.management.agent.jmod - Management Agent Module

⇐ JDK 11 jdk.localedata.jmod - Locale Data Module

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