JDK 11 java.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\java.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\java.management.

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

⏎ sun/management/MemoryManagerImpl.java

/*
 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 *
 */

package sun.management;

import java.lang.management.ManagementFactory;
import java.lang.management.MemoryManagerMXBean;
import java.lang.management.MemoryPoolMXBean;

import javax.management.MBeanNotificationInfo;
import javax.management.ObjectName;

/**
 * Implementation class for a memory manager.
 * Standard and committed hotspot-specific metrics if any.
 *
 * ManagementFactory.getMemoryManagerMXBeans() returns a list
 * of instances of this class.
 */
class MemoryManagerImpl extends NotificationEmitterSupport
    implements MemoryManagerMXBean {

    private final String  name;
    private final boolean isValid;
    private MemoryPoolMXBean[] pools;

    MemoryManagerImpl(String name) {
        this.name = name;
        this.isValid = true;
        this.pools = null;
    }

    public String getName() {
        return name;
    }

    public boolean isValid() {
        return isValid;
    }

    public String[] getMemoryPoolNames() {
        MemoryPoolMXBean[] ps = getMemoryPools();

        String[] names = new String[ps.length];
        for (int i = 0; i < ps.length; i++) {
            names[i] = ps[i].getName();
        }
        return names;
    }

    synchronized MemoryPoolMXBean[] getMemoryPools() {
        if (pools == null) {
            pools = getMemoryPools0();
        }
        return pools;
    }
    private native MemoryPoolMXBean[] getMemoryPools0();

    private MBeanNotificationInfo[] notifInfo = null;
    public MBeanNotificationInfo[] getNotificationInfo() {
        synchronized (this) {
            if(notifInfo == null) {
                notifInfo = new MBeanNotificationInfo[0];
            }
        }
        return notifInfo;
    }

    public ObjectName getObjectName() {
        return Util.newObjectName(ManagementFactory.MEMORY_MANAGER_MXBEAN_DOMAIN_TYPE, getName());
    }

}

⏎ sun/management/MemoryManagerImpl.java

Or download all of them as a single archive file:

File name: java.management-11.0.1-src.zip
File size: 828174 bytes
Release date: 2018-11-04
Download 

⇒ JDK 11 java.management.rmi.jmod - Management RMI Module

⇐ JDK 11 java.logging.jmod - Logging Module

⇑ Download and Use JDK 11

⇑⇑ FAQ for JDK (Java Development Kit)