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】

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());
        }
    }
}

　　

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;
    }
}