java collection 对象 arraylist

package jihedemo;import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;/*** 需求：* 创建collection集合对象* 创建学生对象* 把学生添加到集合* 遍历集合 迭代器方式*/
public class Demo {public static void main(String[] args) {// 创建collection 对象Collection<Student> c = new ArrayList<Student>();Student s1 = new Student("林青霞",30);Student s2 = new Student("张曼玉",35);Student s3 = new Student("王祖贤",33);// 创建学生对象c.add(s1);c.add(s2);c.add(s3);// 遍历集合 迭代器方式Iterator<Student> it = c.iterator();while (it.hasNext()){Student s = it.next();System.out.println(s.getName()+","+s.getAge());}}
}

package jihedemo;public class Student {private String name;private int age;public Student() {}public Student(String name, int age) {this.name = name;this.age = age;}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;}
}