adding first version ocp

Author: ccarella

src/main/java/ocp/Guitar.java

@@ -0,0 +1,38 @@
+package ocp;
+
+public class Guitar {
+
+    private String make;
+    private String model;
+    private int volume;
+
+    public Guitar(String make, String model, int volume) {
+        this.make = make;
+        this.model = model;
+        this.volume = volume;
+    }
+
+    public String getMake() {
+        return make;
+    }
+
+    public void setMake(String make) {
+        this.make = make;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    public int getVolume() {
+        return volume;
+    }
+
+    public void setVolume(int volume) {
+        this.volume = volume;
+    }
+}

src/main/java/singleresponsability/BookPrinter.java src/main/java/srp/BookPrinter.java

@@ -1,4 +1,4 @@
-package singleresponsability;
+package srp;
 
 // A separate class that is concerned only with printing
 public class BookPrinter {

src/main/java/singleresponsability/BookV1.java src/main/java/srp/BookV1.java

@@ -1,4 +1,4 @@
-package singleresponsability;
+package srp;
 
 public class BookV1 {
 

src/main/java/singleresponsability/BookV2.java src/main/java/srp/BookV2.java

@@ -1,4 +1,4 @@
-package singleresponsability;
+package srp;
 
 public class BookV2 {