Java list集合练习——学生对象三种遍历方式打印输出

package com.peihua.cn.test1.Test;

public class Student {
    private String name;
    private int age;
    private String Xxingbie;

    public Student() {
    }

    public Student(String name, int age, String xxingbie) {
        this.name = name;
        this.age = age;
        Xxingbie = xxingbie;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public String getXxingbie() {
        return Xxingbie;
    }

    public void setXxingbie(String xxingbie) {
        Xxingbie = xxingbie;
    }
}

package com.peihua.cn.test1.Test;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class ListTest {
    public static void main(String[] args) {
        // list集合继承自collection，arraylist属于它的子类
        // 创建list集合，
        List<Student> list = new ArrayList<Student>();
        //创建学生对象
        Student s1 = new Student("小燕子", 18, "女");
        Student s2 = new Student("小李子", 19, "男");
        Student s3 = new Student("小猴子", 18, "男");
        //使用list集合的add方法，将变量值添加到list集合，list集合有序排列
        list.add(s1);
        list.add(s2);
        list.add(s3);
        //迭代器遍历，创建迭代器对象
        Iterator<Student> iterable = list.iterator();
        // 将迭代器的方法hasNext的结果值true或false作为判断条件
        // 再通过迭代器的方法next，进行依次有序寻找，直到hasNext的结果是false，遍历结束
        System.out.println("迭代器遍历循环方式：");
        while (iterable.hasNext()) {
            //创建学生对象用来接受迭代器的元素
            Student student = iterable.next();
            //打印输出
            System.out.println(student.getName() + " " + student.getAge() + " " + student.getXxingbie());
        }
        //  也可以使用for循环方式，因为在list集合中有get方法，取出元素
        System.out.println("for循环遍历方式：");
        for (int i = 0; i < list.size(); i++) {
            //创建学生对象，通过get方法获取到元素，赋值给学生对象的变量
            Student student = list.get(i);
            //打印输出
            System.out.println(student.getName() + " " + student.getAge() + " " + student.getXxingbie());
        }
        System.out.println("增强for循环遍历方式：");
        //增强for循环，是lsit集合特有的方式，其内部还是个迭代器
        //格式  for（元素数据类型 变量名 : 数组/集合对象名）{}
        for (Student student : list) {
            System.out.println(student.getName() + " " + student.getAge() + " " + student.getXxingbie());
        }

    }
}