JavaSE-14.4.2【案例-List集合的实现(子)类存储学生对象三种方式遍历】

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package day5.lesson4;   import java.util.ArrayList; import java.util.Iterator;   /* 4.2 案例-ArrayList集合存储学生对象三种方式遍历     创建一个存储学生对象的集合，存储3个学生对象，使用程序实现在控制台遍历该集合       PS：LinkedList实现该案例的方式同ArrayList  */ public class ArrayListDemo {     public static void main(String[] args) {         ArrayList<Student> arrayList = new ArrayList<>();         Student stu1 = new Student("lisi", 22);         Student stu2 = new Student("wangwu", 22);         Student stu3 = new Student("zhansgan", 24);         arrayList.add(stu1);         arrayList.add(stu2);         arrayList.add(stu3);           Iterator<Student> it = arrayList.iterator();         while (it.hasNext()){             Student student = it.next();             System.out.println(student.getName() + "," + student.getAge());         }           for(int i=0; i<arrayList.size(); i++){             Student student = arrayList.get(i);             System.out.println(student.getName() + "," + student.getAge());         }           for (Student student: arrayList){             System.out.println(student.getName() + "," + student.getAge());         }     } }

　　

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package day5.lesson4;   public class Student {       private String name;     private int age;       public Student() {     }       public Student(String name, int age) {         this.name = name;         this.age = age;     }       public void setName(String name) {         this.name = name;     }       public void setAge(int age) {         this.age = age;     }       public String getName() {         return name;     }       public int getAge() {         return age;     } }