Java JMX code example

jmx-example.java

public class SystemStatus implements SystemStatusMBean {
   private Integer numberOfSecondsRunning;
   private String programName;
   private Long numberOfUnixSecondsRunning;
   private Boolean switchStatus;
   private Thread backgroundThread;

   public SystemStatus(String programName) {
       // First we initialize all the metrics
       this.backgroundThread = new Thread();
       this.programName = programName;
       this.numberOfSecondsRunning = 0;
       this.numberOfUnixSecondsRunning = System.currentTimeMillis() / 1000L;
       this.switchStatus = false;

       // We will use a background thread to update the metrics
       this.backgroundThread = new Thread(() -> {
           try {
               while (true) {
                   // Every second we update the metrics
                   numberOfSecondsRunning += 1;
                   numberOfUnixSecondsRunning += 1;
                   switchStatus = !switchStatus;
                   Thread.sleep(1000L);
               }
           } catch (Exception e) {
               e.printStackTrace();
           }
       });
       this.backgroundThread.setName("backgroundThread");
       this.backgroundThread.start();
   }


   // Through this getters, defined in the interface SystemStatusMBean,
   // all the metrics will be automatically retrieved

   @Override
   public Integer getNumberOfSecondsRunning() {
       return numberOfSecondsRunning;
   }

   @Override
   public String getProgramName() {
       return programName;
   }

   @Override
   public Long getNumberOfUnixSecondsRunning() {
       return numberOfUnixSecondsRunning;
   }

   @Override
   public Boolean getSwitchStatus() {
       return switchStatus;
   }
}