public class Job implements Runnable {
  private int jobNumber;
  
  Job(int jobNumber) {
    this.jobNumber=jobNumber;
  }
  
  public void run() {
    //Undertake required work, here we will emulate it by sleeping for a period
    System.out.println("Job: " + jobNumber +" is being processed by thread: " + Thread.currentThread().getName());
    try {
        Thread.sleep((int)(1000));
    } catch (InterruptedException e) {
      //no catching as example should not experience interruptions
    }
    System.out.println("Job: " + jobNumber + " is ending in thread: " + Thread.currentThread().getName());
  }
}

Create Job.java