import java.io.*;


class Friend{
	String name;
	int age;
}

public class Prog5_1{
	public static void main(String args[]){

 		Friend f1 = new Friend();
		f1.name = "taro";
		f1.age = 20;
		System.out.println(f1.name+":"+f1.age);

		Friend f2 = new Friend();
		f2.name = "jiro";
		f2.age = 16;

		System.out.println(f2.name+":"+f2.age);
	}
}