public class VarDemo{ public static void main(String args[]){ byte x=3; x=(byte)(x+5); System.out.println(x); } }
public class Varchar{ public static void main(String args[]){ System.out.println((char)("a"+1));
System.out.println("你"+0);
System.out.println("0");
System.out.println("A"+0);
}
}