FloatingPointProblem.java

public class FloatingPointProblem {
    public static void main(String []args) {  
      float f = 3.1f;
      double d = 3.1;

      System.out.println(Float.floatToRawIntBits(f) + "\n");    // 1078355558
      System.out.println(Double.doubleToRawLongBits(d) + "\n"); //4614162998222441677
        
      if (d == f) {
          System.out.println("f == d"); 
      } else {
          System.out.println("f != d"); 
      }
      // output f != d
    }
}