How to center a string using String.format?

Question

public class Divers {
  public static void main(String args[]){

     String format = \"|%1$-10s|%2$-10s|%3$-20s|\\n\";
     System.out.format(format, \"FirstName\",         


        

Answer 1

Converted the code found at https://www.leveluplunch.com/java/examples/center-justify-string/ into a handy, small one-line function:

public static String centerString (int width, String s) {
    return String.format("%-" + width  + "s", String.format("%" + (s.length() + (width - s.length()) / 2) + "s", s));
}

Usage:

public static void main(String[] args){
    String out = centerString(10, "afgb");
    System.out.println(out); //Prints "   afgb   "
}

I think it's a very neat solution that's worth mentioning.