How should I use a Progress Monitor

在package org.eclipse.core.runtime;

• Always start the progress monitor and do at least 1 bit of work. For example:

  
  monitor.beginTask("Working", 4);
  
  
  monitor.work(1);
  
  

• Always finish started job.

  
  try{
  
  
    monitor.beginTask("Working", 4);
  
    
  
  
  monitor.work(1);
  
    // some work
  }
  
  
  finally{
  
  
    monitor.done();
  
  
  
  
  }
  
  

• Make use of SubProgressMonitor if sending the monitor to another method:

  
  try{
  
  
    monitor.beginTask("Working", 8);
  
  
    monitor.work(1);
  
  
  
  
    SubProgressMonitor sub=new SubProgressMonitor(monitor, 3);
  
    
  
  
  doSomeWork(sub);
  
    
  
  
  sub.done();  // don't forget to make sure the sub monitor is done
  
  
  
  
    sub=new SubProgressMonitor(monitor, 3);
  
  
  
  
  doSomeMoreWork(sub);
  
    sub.done();  // don't forget to make sure the sub monitor is done 
  
  
  }
  
  
  finally{
  
  
    monitor.done();
  
  
  
  
  }