unreachable code when trying to stop executing method if condition true

Good day!

Im currently trying to stop my method if one of the digits = 0. For some reason it says "unreachable code" at the point below:

    static void method(int y) {


    int dig1 = y % 10;
    int dig2 = y / 10 % 10;  //digits of y
    int dig3 = y /100 % 10;

    if (num1 == 0);{         //if dig1 = 0, stop the method
       return; 
    }
     if (num2 == 0);{      // unreachable code, but why?
        return;
     }
      .... and so on

How come it says unreachable code even if the condition is not true? y = numbers from 122 - 133 and the only number who is supposed to stop the method is 130 because of the 0. Could someone be this kind and explain it to me please? Thanks!