Program Deret Geometri Java

Listing 

import java.util.Scanner;
public class geometri{
public static void main (String[]args){
int a = 2 , batas, total = 0;
Scanner input = new Scanner(System.in);
System.out.print("Masukkan Batas : ");
batas = input.nextInt();
for(int i = 1; i<=batas; i++){
System.out.print(a);
total = a + total;
a = a * 2;
if (i<batas){
System.out.print(" + ");
}else{
System.out.print(" = "+total);
}
}
}
}

Output