Conversion of double to int

I want to input the W into the int array. How can i do that? Sorry for the lousy question or english.

public void setX (int Y , double W)
{       
  array[Y] = W;
}

If you're happy to truncate towards 0 - and get int.MIN_VALUE or int.MAX_VALUE if the value is out of the range of int - you can just cast:

array[Y] = (int) W;

If you're not happy with those caveats, you should re-evaluate your design - think about what you want to happen, e.g. if W is 15.25. If you need to preserve all the original information, you should use a double[] rather than an int[].

(You should also revisit your parameter names, if those are your real names. Read up on Java naming conventions.)

See more on this question at Stackoverflow