Integer division, Urgent Please

[Kishan Kumar]

Folks,
When I try to divide numbers like this
floatt f1 = 8/2000;
System.out.println("oytput of 8/2000 = "+f1);
The output is 0.0
But i want it as 0.004. How to write code to get this.
Please suggest.


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Regards,
V. Kishan Kumar

[Junilu Lacar]

Read up on how conversion works in Java. You get 0.0 because 8 and 2000 are both seen by the compiler as integers. The result of integer division is always an integer. Java also truncates the result. Thus the result of (8/2000) is the integer value 0 which is then automatically converted to a float (0.0f) and assigned to the variable f1. One solution for you would be to make at least one of your operands a float, e.g.

  // any of these will work
  float f1 = 8 / 2000.0f;
  float f1 = 8.0f / 2000;
  float f1 = 8.0f / 2000.0f;
  // can't do this though
  float f1 = 8.0 / 2000;   // 8.0 is double, expr needs a (float) cast

Note that floating point calculations may lose precision so you may or may not get the exact results that you are looking for.
HTH
J. Lacar

[This message has been edited by JUNILU LACAR (edited March 02, 2001).]