集合转数组的遍历,为什么没有输出结果,我是缺了什么还是?

Question

Collection c2 = new ArrayList();
c2.add(new Student("张三",23));
c2.add(new Student("李四",24));
c2.add(new Student("王五",25));
c2.add(new Student("赵六",26));
c2.add(new Student("陈七",27));

    Object[] arr = c2.toArray();
    for (int i = 0; i < args.length; i++) {
        Student s = (Student)arr[i];
        System.out.println(s.getName()+" " +s.getAge());
    }

}

Answer 1

大哥 args 是main()里面的变量，不是数组，for (int i = 0; i < arr.length; i++) {