List中遍历时删除异常_new for遍历list删除不符合条件的项

在List遍历删除时产生异常

解决方案：

不要使用for-each遍历，换成迭代器遍历，并且不要用list.remove()方法移除对象，用迭代器的方法iterator.remove()移除对象，具体看下面的代码：

class ArrayListDelete {
    public static void main(String[] args) {
        Student student = new Student("小明", "1");
        Student student1 = new Student("小明", "2");
        Student student2 = new Student("小明", "3");
        ArrayList<Student> students = new ArrayList<>();
        students.add(student);
        students.add(student1);
        students.add(student2);
        Iterator<Student> iterator = students.iterator();
        while (iterator.hasNext()){
            Student next = iterator.next();
            if(next.getId().equals("1")){
                iterator.remove();
            }
        }
        System.out.println(students.toString());
    }
}
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