java - double being rounded and not precise - 


double x = 0; double p = 0.327; //p function return double , change time double w1 = 1/4; //prints 0 (w1 , w2 same p) double w2= 10/4; //prints 2 x=x+p*w1+(1-p)*w2;  system.out.println(x); // prints 1.346 , real result 1.76425

i dont know how overcome problem of double rounding down, tried bigdecimal, maybe dont right..

i dont need precise result need result 1.764. in advance.

1 / 4 , 10 / 4 integer divisions. result int, widened double. want double division:

double w1 = 1.0 / 4

or

double w1 = 1 / 4.0

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