W3School TIY Editor

public class Main {

  public static void main(String[] args) {

    System.out.println(Math.nextUp(1.0f));

    System.out.println(Math.nextUp(1.0));

    System.out.println(Math.nextUp(0.5f));

    System.out.println(Math.nextUp(0.5));

    System.out.println(Math.nextUp(Math.PI));

    System.out.println(Math.nextUp(3.1415927f));

  }

}

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