Distorted Android

    synchronized void execute()

      if( mPrevJobs!=null )

        JobNode node;

        int numPrev = mPrevJobs.size();

        for(int i=0; i<numPrev; i++)

          {

          node = mPrevJobs.get(0);  // removeNode() rips the executed job out, thus the 0

          node.execute();

          }

        removeNode(this);

        mJob.execute();

        }

    synchronized void clear()