@Override 
	public String toString() {
	  int listSize = pcbList.size();
	  StringBuilder output = new StringBuilder();
	  
	  for(int i = 0; i < listSize; i++) {
	    ProcessControlBlock pcb = pcbList.get(i);
	    output.append("\t");
	    output.append("Process " + i + " (" + pcb.getProcess().getProcessType() + ")'s state: " + pcb.getState() + "\n" );
	  }
	  
	  return output.toString();
	}