Looks like a silly problem...

Question

I don't know why but I get always 0 values when I am tring to print a1 and a2 in Calculate function.
every time I send a value into sample so I don't know why it keeps giving me 0 for a1 and a2 and c.
class A
long a1;
long a2;
long c;
     void Calculate(long sample)
          a1= (((long)(0.222))*a1) + (((long)(0.15))*sample);
          a2= ((long)(1-0.25)*a2)+((long)0.25*(Math.abs(a1-sample)));
          c = a1 + (4*a2);
A
a1 =0 ; a2 =4;
     

Answer 1

try this
class A
long a1;
long a2;
long a3;
  public A()
     a1 = 5;
     Calculate(a1);
  void Calculate(long sample)
    a1= (((long)(0.222))*a1) + (((long)(0.15))*sample);
   System.out.println( "a1 is: "+a1 );
    a2= ((long)(1-0.25)*a2)+((long)0.25*(Math.abs(a1-sample)));
   System.out.println( "a2 is: "+a2 );
    c = a1 + (4*a2);
   System.out.println( "c is: "+c );
}