public class Decoder
{
  int inputs;
  int functions;
  int outputs;
  
  //Constructor accepts two parameters. One represents the number of
  //inputs and the other the number of functions to be implemented. 
  //Also initializes the class variable "outputs."
  public Decoder(int in, int f)
  {
    inputs = in;
    functions = f; 
    //Calculates the number of outputs based on the number of inputs.
    //Recall that if x is the number of inputs, 2^x is the number of
    //outputs.
    outputs = (int) Math.pow(2,inputs);
  }
  
  //Main method is used to ensure program executes as desired.
  public static void main(String[] args)
  {
    //Creates an Decoder object.
    Decoder decoderCircuit = new Decoder(3,2);
    //Uses decoder object reference variable to call description()
    //method to make sure the an Decoder object was created based on 
    //the desired specifications. 
    decoderCircuit.description();   
  }
  
  public void description()
  {
    //Prints out the specifications of the Encoder object.    
    System.out.println ("This decoder has " + inputs + " inputs and " + outputs
                          + " outputs.  It represents " + functions + " functions.");    
  }
  
}