集合存储自定义类型对象
集合可以存放仍和一种引用类型,包含我们自定义的Person类对象。
public class Person {
private String name; //姓名
private int age; //年龄
public Person() {
}
public Person(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;
}
}
public class ArrayListCustom {
public static void main(String[] args) {
// 首先创建几个Person对象
Person one = new Person("AA", 18);
Person two = new Person("BB", 19);
Person three = new Person("CC", 20);
// 准备一个集合,用来存放多个Person 对象
ArrayList<Person> list = new ArrayList<>();
// 将对象添加到集合当中
list.add(one);
list.add(two);
list.add(three);
// 遍历集合
for (int i = 0; i < list.size(); i++) {
Person per = list.get(i);
System.out.println("姓名:" + per.getName() + ",年龄" + per.getAge());
}
}
}