类与对象

class Person {
String name;
int age;

void sayHello() {
System.out.println(name + " 说你好");
}
}

public class Test {
public static void main(String[] args) {
Person p1 = new Person();
p1.name = "曹博";
p1.age = 18;
p1.sayHello();

Person p2 = new Person();
p2.name = "李伯韬";
p2.age = 18;
p2.sayHello();
}
}