生成6个1~33之间的随机整数,添加到集合,并遍历
public class ArrayListDemo1 { public static void main(String[] args) { // 创建Random 对象 Random random = new Random(); // 创建ArrayList 对象 ArrayList<Integer> list = new ArrayList<>(); // 添加随机数到集合 for (int i = 0; i < 6; i++) { int r = random.nextInt(33) + 1; list.add(r); } // 遍历集合输出 for (int i = 0; i < list.size(); i++) { System.out.println(list.get(i)); } } }
自定义4个学生对象,添加到集合,并遍历
public class TestStudent { public static void main(String[] args) { //创建集合对象 ArrayList<Student> list = new ArrayList<Student>(); //创建学生对象 Student s1 = new Student("赵丽颖",18); Student s2 = new Student("唐嫣",20); Student s3 = new Student("景甜",25); Student s4 = new Student("柳岩",19); //把学生对象作为元素添加到集合中 list.add(s1); list.add(s2); list.add(s3); list.add(s4); //遍历集合 for(int x = 0; x < list.size(); x++) { Student s = list.get(x); System.out.println(s.getName()+"‐‐‐"+s.getAge()); } } }
原文地址:https://www.cnblogs.com/libinhong/p/10988958.html
时间: 2024-10-11 09:47:26