Updated domain. Further erxplanation in README

domain/C3PO.java

@@ -1,4 +1,37 @@
 package domain;
 
-public class C3PO {
+public class C3PO implements Robot{
+
+   private int id;
+   private String name;
+   private boolean power;
+
+   public C3PO(int id, String name){
+      this.id = id;
+      this.name = name;
+      power = false;
+   }
+   @Override
+   public int getId() {
+      return id;
+   }
+
+   @Override
+   public String getName() {
+      return name;
+   }
+
+   @Override
+   public void triggerPowerSwitch() {
+      if(power = false){
+         power = true;
+      }else{
+         power = false;
+      }
+   }
+
+   @Override
+   public boolean isPowerOn() {
+      return power;
+   }
 }

domain/R2D2.java

@@ -1,4 +1,36 @@
 package domain;
 
-public class R2D2 {
+public class R2D2 implements Robot{
+   private int id;
+   private String name;
+   private boolean power;
+
+   public R2D2(int id, String name){
+      this.id = id;
+      this.name = name;
+      power = false;
+   }
+   @Override
+   public int getId() {
+      return id;
+   }
+
+   @Override
+   public String getName() {
+      return name;
+   }
+
+   @Override
+   public void triggerPowerSwitch() {
+      if(power = false){
+         power = true;
+      }else{
+         power = false;
+      }
+   }
+
+   @Override
+   public boolean isPowerOn() {
+      return power;
+   }
 }