Javalist集合练习——学生对象三种遍历方式打印输出

Javalist集合练习——学⽣对象三种遍历⽅式打印输出创建⼀个学⽣类
package .test1.Test;
public class Student {
private String name;
private int age;
private String Xxingbie;
public Student() {
}
public Student(String name, int age, String xxingbie) {
= name;
this.age = age;
Xxingbie = xxingbie;
}
public String getName() {
return name;
}
public void setName(String 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;
}
}
测试类
package .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()); }
}
}。