A simple example of wiring an application together

VirtualPointOfSaleTerminal.java

package ca.jbrains.pos;

import ca.jbrains.pos.ui.TextProcessorAndCommandInterpreter;
import ca.jbrains.pos.ui.lcd.UdpPostOffice; 
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;

public class VirtualPointOfSaleTerminal {
  public static void main(String[] args) throws IOException {
    TextProcessorAndCommandInterpreter textProcessorAndCommandInterpreter = new TextProcessorAndCommandInterpreter(
      new SaleController(
        new InMemoryCatalog(
          new HashMap<String, Price>() {{
            put("12345", Price.cents(795));
            put("23456", Price.cents(1250));
            put("036000216066", Price.cents(379));
          }}
        ),
        new EnglishLanguageTextDisplay(
          new UdpPostOffice("localhost", 5358, "UTF-8"))
      )
    );
    
    textProcessorAndCommandInterpreter.process(
      new InputStreamReader(System.in)
    ):
  }
}