Page 287 - ComputerScience_Class_11

obj.calculate(10, 30);
obj.calculate(20, 35);
}
}
2. class Armstrong {
int n;
Armstrong() {
n = 0;
}
void input() {
Scanner sc = new Scanner(System.in);
System.out.println("Enter a number: ");
n = sc.nextInt();
}
boolean check_armstrong() {
int temp = n, sum = 0, rem;
int digits = String.valueOf(n).length();
while (temp > 0) {
rem = temp % 10;
sum += Math.pow(rem, digits);
temp /= 10;
}
return n == sum;
}
void display() {
if (check_armstrong())
System.out.println(n + " is an Armstrong Number");
else
System.out.println(n + " is not an Armstrong Number");
}
public static void main(String[] args) {
Armstrong ob = new Armstrong();
ob.input();
ob.display();
}
}
3. class Counter {
static int increase = 0;
static void incre() {
increase++;
}
void display() {
System.out.println("Counter:" + increase);
}
public static void main(String[] args) {
Counter ob1 = new Counter();

Methods and Constructors 285