public class integralConversion {
   public static void main(String[] pars) {

      byte   b1=0, b2=0, b3=0;
      short  s1=0, s2=0, s3=0;
      int    x1=0, x2=0, x3=0;
      long   y1=0, y2=0, y3=0;

      // Basic assignments such as the above work,
      // as long as they are within the types range

      x1 = b1;

      x1 = s1;

      s1 = b1;

      y1 = x1;

      x1 = y1;

      b1 = s1;

      x3 = x1 + x2; 

      y1 = y2 + y3;

      b3 = b1 + b2;

      b3 = (byte)(b1 + b2);

      x1 = b1 + b2;

      s3 = s1 + s2;

      s3 = (short)(s1 + s2);

      s3 = x1 + s1 + b1;

      s3 = (short)(x1 + s1 + b1);

      y1 = x1 + s1 + b1;

      x1 = b1 + b2;

      x1 = s1 + s2;

      x1 = b1 + s2;

      y3 = y1 + y2;

      x1 = y1 + y2;

      x1 = y3;

      x1 = 10;
   }
}