Incrementing a Double by the Smallest Possible Amount : ChoiceFormat « I18N « Java Tutorial

1. Java Tutorial
2. I18N
3. ChoiceFormat

import java.text.ChoiceFormat;

public class Main {
  public static void main(String[] argv) throws Exception {

    double d = 1.2;

    // Get the largest double less than d
    double d1 = ChoiceFormat.previousDouble(d);
    System.out.println(d1);
  }
}
//1.1999999999999997