list集合對象去重

今天突然遇到list集合對象去重的問題，在這里記錄一下解決方法，自己覺得還不錯。

在list集合里去掉重復對象，只要把它強轉成set集合就可以了，

List<Student> stu = new ArrayList<Student>();  
        stu.add(new Student("1","yi"));  
        stu.add(new Student("3","san"));  
        stu.add(new Student("1","yi"));  
        stu.add(new Student("3","san"));  
        stu.add(new Student("2","er"));  
        stu.add(new Student("1","yi"));  
        stu.add(new Student("3","san"));  
        stu.add(new Student("2","er"));  
        //set集合保存的是引用不同地址的對象  
        Set<Student> ts = new HashSet<Student>();  
        ts.addAll(stu);  
          
        for (Student student : ts) {  
            System.out.println(student.getId()+"-"+student.getName());  
        }