Cast variables types

class Main {
    public static void main(String[] args) {
      //  System.out.println("Hello World!");
        
        byte byteNumber = 23;
        short shortNumb = 12;
        
        int intNumb = 12;
        
        int theSumbOfByteAndShort  = (int)(byteNumber + shortNumb );
        
        long longNumb = 50000 + 10L * theSumbOfByteAndShort + intNumb; 
        
        System.out.println("The  result  is : " + longNumb);
        
    }
}