What's the right way to parseFloat in Java

Question

I notice some issues with the Java float precision

       Float.parseFloat(\"0.0065\") - 0.001  // 0.0055000000134110451
       new Float(\"0.027\") - 0.001          


        

Answer 1

See What Every Computer Scientist Should Know About Floating-Point Arithmetic. Your results look correct to me.

If you don't like how floating-point numbers work, try something like BigDecimal instead.