编写代码，并写出运行结果。需求:创建一个Collection集合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。思路: 1.定义学生类 2.创建Collection集合对象 3.创建学生对象 4.把学生添加到集合 5.遍历集合(迭代器方式)

以下是实现你所需求的代码，运行结果也附在下面：

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;

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

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

    public int getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public static void main(String[] args) {
        Collection<Student> students = new ArrayList<Student>();
        Student student1 = new Student(1, "Tom", 18);
        Student student2 = new Student(2, "Jerry", 19);
        Student student3 = new Student(3, "Mike", 20);
        students.add(student1);
        students.add(student2);
        students.add(student3);
        Iterator<Student> it = students.iterator();
        while (it.hasNext()) {
            Student student = it.next();
            System.out.println("id:" + student.getId() + " name:" + student.getName() + " age:" + student.getAge());
        }
    }
}

运行结果：

id:1 name:Tom age:18
id:2 name:Jerry age:19
id:3 name:Mike age:20