如何实现到Collection的转换?下面的代码还可以进行优化吗？

Question

Vector<Object> vect = updateNode.getTimeTreeObjects();
        Collection<Object> nonMilestoneObjects = new ArrayList<Object>();
        Iterator<Object> it = vect.iterator();
        Object obj;
        while (it.hasNext()) {
            obj = it.next();
            if (!(obj instanceof GuiTimeTreeMilestone)) {
                nonMilestoneObjects.add(obj);
            }
        }
        vect.removeAllElements();
        it = nonMilestoneObjects.iterator();
        while (it.hasNext()) {
            vect.addElement(it.next());
        }

Answer 1

Vector<Object> vect = updateNode.getTimeTreeObjects();
  //Collection<Object> nonMilestoneObjects = new ArrayList<Object>();
  Iterator<Object> it = vect.iterator();
  Object obj;
  while (it.hasNext()) {
  obj = it.next();
  if (obj instanceof GuiTimeTreeMilestone) {
    }
  }
  vect.removeAllElements();
  it = nonMilestoneObjects.iterator();
  while (it.hasNext()) {
  vect.addElement(it.next());
  }

Answer 2

// **** 上面我发的是手误 ，而且不能编辑Vector<Object> vect = updateNode.getTimeTreeObjects();
  //Collection<Object> nonMilestoneObjects = new ArrayList<Object>();
  Iterator<Object> it = vect.iterator();
  Object obj;
  while (it.hasNext()) {
  obj = it.next();
  if (obj instanceof GuiTimeTreeMilestone) { // 此处符合你程序中要求的逻辑
     it.remove(); // 直接删除
  }
  }
  //vect.removeAllElements();
 // it = nonMilestoneObjects.iterator();
  //while (it.hasNext()) {
 // vect.addElement(it.next());
 // }