public class VarArgsDemo {

	public static void sum(int... a) {
		
		int sum=0;
		for(int i=0; i < a.length; i++) {
			
			sum += a[i];
		}
		System.out.println("The sum is " + sum);
	}

	public static void main(String[] args) {
	
		sum(1,2,4,5);
		sum(1,2);
		sum();
	}
}
/* OUTPTUT
The sum is 12
The sum is 3
The sum is 0
*/