package Bien; public class DemoBien { public static void main(String[] args) { System.out.println("Viettel VTCC"); //Khai báo 1 biến kiểu chuỗi String hoVaTen = "Thuỳ Linh"; int tuoi = 30; String mobilePhone = "0123456789"; System.out.println(hoVaTen); System.out.println(tuoi); String Ho_Va_Ten = "Phương"; System.out.println(Ho_Va_Ten); } }