public class Substraction {
	
	private int num1,num2,ans;
	public void initValues(int n1,int n2) {
		num1 = n1;
		num2 = n2;
	}
	public void calculateSub() {
		ans = num1 - num2;
	}
	public void display() {
		System.out.println("Substraction is " +ans+".");
	}

}