In Java the floating point arithmetic is not represented precisely. For example following snippet of code

            float a = 1.2; 
            float b= 3.0;
            float c = a * b; 
            if(c == 3.6){
              System.out.println("c is 3.6");
            } else {
                System.out.println("c is not 3.6");
            } 

actually prints "c is not 3.6".

I'm not interested in precision beyond 3 decimals (#.###). How can I deal with this problem to multiply floats and compare them reliably?

Thanks much