- public class Person {
- private static int count = 0;
- int id;
- String name;
- int age;
- public Person() {
- id = ++count;
- }
- public String toString() {
- return "Id:" + id + ", Name:" + name + ", Age:" + age;
- }
- public static void main(String[] args) {
- Person p1 = new Person();
- p1.name = "zhangsan";
- p1.age = 10;
- Person p2 = new Person();
- p2.name = "lisi";
- p2.age = 12;
- System.out.println(p1);
- System.out.println(p2);
- }
- /**Output
- * Id:1, Name:zhangsan, Age:10
- * Id:2, Name:lisi, Age:12
- */
- //~
- }
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