Java实现对List去重

 　 public static void main(String[] args) {
        Test07 test07 = new Test07();
        System.out.println(test07.getList());
    }

    public List getList() {
        List originalList = new ArrayList();
        originalList.add(1);
        originalList.add(3);
        originalList.add(3);
        originalList.add(5);
        originalList.add(7);
        originalList.add(7);
        originalList.add(13);

        List tempList = new ArrayList();
        for (Object object : originalList) {
            if (!tempList.contains(object)) {
                tempList.add(object);
            }
        }
        return tempList;
    }

　　　　　// 利用set集合唯一性去重
        Set set = new HashSet(originalList);
        List tempList = new ArrayList(set);
        return tempList;

　　　　 TreeSet treeSet = new TreeSet(originalList);
        List tempList = new ArrayList();
        tempList.addAll(treeSet);
        return tempList;