Use StringBuilder to pad String with blank spaces or other characters

Question

I\'m a beginner to java and this is my first post on Stackoverflow. Although my initial code is similar to other posts here, my question relates to implementing StringBuilde

Answer 1

You can also something really simpler with the fill() method of Arrays.

StringBuilder sb = new StringBuilder();
char[] pad = new char[padnum - result.length()];
Arrays.fill(pad, '*');
return sb.append(pad).append(result).toString();

We are in really little times but this method is about 25% faster than the for loop one.