Java removing the last string

Question

I have different types of names. Like

ABC BCD, EFG HGF, HGF HJK

I want to replace the last , with "and". So, the format will be like this

ABC BCD, EFG HGF & HGF HJK

I tried with this

names = "Jon Benda, Jon Wetchler, Thomas Leibig "
StringBuilder sbd = new StringBuilder();
String[] n = getNames.split("\\s+");
System.out.println(n.length);
for (int i = 0; i < n.length; i++) {
    sbd.append(n[i]);
    System.out.print(n[i]);
    if (i < n.length - 3)
        sbd.append(" ");
    else if (i < n.length - 2)
        sbd.append(" & ");
}
System.out.print("\n");
System.out.print(sbd);

Answer 1

Why to over complicate it? You can search for the last index of , using String#lastIndexOf and then use StringBuilder#replace:

int lastIdx = names.lastIndexOf(",");
names = new StringBuilder(names).replace(lastIdx, lastIdx+1, "and").toString();

Answer 2

You can do something like this.

 public static void main(String[] args) {
        String names = "Jon Benda, Jon Wetchler, Thomas Leibig ";
        String newNames = "";
        StringBuilder sbd = new StringBuilder();
        String[] n = names.split(",");
        System.out.println(n.length);
        for (int i = 0; i < n.length; i++) {

            if (i == n.length - 1) {
                newNames = newNames + " and " + n[i];
            } else {
                newNames = newNames + n[i] + " ";
            }
        }
        System.out.println(newNames);
    }

This outputs

 Jon Benda  Jon Wetchler  and  Thomas Leibig