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Example of ManagementFactory in Java

March 25, 2013
ManagementFactory belongs to the package java.lang.management. java.lang.management has the factory method. These are static methods. ManagementFactory handles managed beans in java plateform. ManagementFactory provides the method to return MXBean. Below is the sample usage of ManagementFactory.

ManagementFactoryTest.java
package com.concretepage;
import java.lang.management.ClassLoadingMXBean;
import java.lang.management.ManagementFactory;
import java.lang.management.MemoryPoolMXBean;
import java.lang.management.MemoryUsage;
import java.lang.management.ThreadMXBean;
import java.util.List;
public class ManagementFactoryTest {
   
  public static void main(String[] a){
      Thread th= new ManagementFactoryTest().new UserThread();
      Runtime.getRuntime().addShutdownHook(th);
  }
  
  class UserThread extends Thread {

      public void run() {
              
              // Using getThreadMXBean
              System.out.println("result of getThreadMXBean ");
              ThreadMXBean thMxB = ManagementFactory.getThreadMXBean();
              
              System.out.println(("Current thread count:"+ thMxB.getThreadCount()));
              
              //using getMemoryPoolMXBeans
              System.out.println("result of getMemoryPoolMXBeans ");
              List mpmxList = ManagementFactory.getMemoryPoolMXBeans();
 
			  for (MemoryPoolMXBean pl : mpmxList) {
                MemoryUsage peak = pl.getPeakUsage();
                System.out.println(peak.getUsed());  
              }
              // Using getClassLoadingMXBean
              System.out.println("result of getClassLoadingMXBean ");
              ClassLoadingMXBean clmxB= ManagementFactory.getClassLoadingMXBean();
              System.out.println(clmxB.getTotalLoadedClassCount());
 
      }
  }

}


Output
result of getThreadMXBean 
Current thread count:6
result of getMemoryPoolMXBeans 
382208
1974088
0
0
2795952
result of getClassLoadingMXBean 
344
 

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