集合遍历 Iterator Foreach

Iterator<T> iterator()

public static void main(String[] args) {
Student s1 = new Student("bob", false);
Student s2 = new Student("李四", true);
ArrayList<Student> arrayList = new ArrayList<Student>();
arrayList.add(s1);
arrayList.add(s2);
for (Student s:arrayList){
System.out.println("姓名："+ s.name+" " +"性别：" + s.sex);
}
姓名：bob 性别：false
姓名：李四 性别：true