Question

I am getting the values from arraylist arr and storing those values in a string with comma separator. But for the last value also comma is adding. How can I remove that? Please help me…

My Code:

ArrayList<String> arr;  
String str;

    for (int i = 0; i < arr.size(); i++) {

                int kk = arr.size();
                System.out.println("splitting test" + arr.get(i));
                str += arr.get(i) + ",";

                System.out.println("result" + str);


            }

Answer 1

Do not add it at all:

ArrayList<String> arr;  
String str;

for (int i = 0; i < arr.size(); i++) {
   int kk = arr.size();
   System.out.println("splitting test" + arr.get(i));
   str += arr.get(i);
   if (i + 1 != arr.size()) {
     str+= ",";
   }
   System.out.println("result" + str);
}