Convert integer to readable format

 
import java.text.DecimalFormat;

public class Main {
  public static void main(String[] argv) {
    System.out.println(humanReadableInt(123123321123L));
  }

  public static String humanReadableInt(long number) {

    long absNumber = Math.abs(number);
    double result = number;
    String suffix = "";
    if (absNumber < 1024) {
      // nothing
    } else if (absNumber < 1024 * 1024) {
      result = number / 1024.0;
      suffix = "k";
    } else if (absNumber < 1024 * 1024 * 1024) {
      result = number / (1024.0 * 1024);
      suffix = "m";
    } else {
      result = number / (1024.0 * 1024 * 1024);
      suffix = "g";
    }
    DecimalFormat oneDecimal = new DecimalFormat("0.0");
    return oneDecimal.format(result) + suffix;
  }
}