diff --git a/lesson_07/objects/objects_app/src/main/java/com/codedifferently/lesson7/MohamedObjects/Main/Part.java b/lesson_07/objects/objects_app/src/main/java/com/codedifferently/lesson7/MohamedObjects/Main/Part.java
new file mode 100644
index 00000000..52df260f
--- /dev/null
+++ b/lesson_07/objects/objects_app/src/main/java/com/codedifferently/lesson7/MohamedObjects/Main/Part.java
@@ -0,0 +1,49 @@
+package com.codedifferently.lesson7.mohamedobjects.main;
+
+public class Part {
+  String name;
+  int releaseYear;
+  String brand;
+
+  public Part() {}
+
+  public Part(String name, int releaseYear, String brand) {
+    this.name = name;
+    checkValidYear(releaseYear);
+    this.releaseYear = releaseYear;
+    this.brand = brand;
+  }
+
+  public void setBrand(String brand) {
+    this.brand = brand;
+  }
+
+  public void setName(String name) {
+    this.name = name;
+  }
+
+  public void setReleaseYear(int releaseYear) {
+    checkValidYear(releaseYear);
+    this.releaseYear = releaseYear;
+  }
+
+  public String getBrand() {
+    return brand;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  public int getReleaseYear() {
+    return releaseYear;
+  }
+
+  public boolean checkValidYear(int year) {
+    if (year <= 2024 && year >= 2000) {
+      return true;
+    } else {
+      throw new IllegalYearExeption("Year is out of expected range. 2000 - 2024");
+    }
+  }
+}
diff --git a/lesson_07/objects/objects_app/src/main/java/com/codedifferently/lesson7/MohamedObjects/Main/cpuBrand.java b/lesson_07/objects/objects_app/src/main/java/com/codedifferently/lesson7/MohamedObjects/Main/cpuBrand.java
new file mode 100644
index 00000000..79233ab0
--- /dev/null
+++ b/lesson_07/objects/objects_app/src/main/java/com/codedifferently/lesson7/MohamedObjects/Main/cpuBrand.java
@@ -0,0 +1,7 @@
+package com.codedifferently.lesson7.mohamedobjects.main;
+
+public enum cpuBrand {
+  AMD,
+  INTEL,
+  APPLE
+}
diff --git a/lesson_07/objects/objects_app/src/main/java/com/codedifferently/lesson7/MohamedObjects/Main/portType.java b/lesson_07/objects/objects_app/src/main/java/com/codedifferently/lesson7/MohamedObjects/Main/portType.java
new file mode 100644
index 00000000..07af06d2
--- /dev/null
+++ b/lesson_07/objects/objects_app/src/main/java/com/codedifferently/lesson7/MohamedObjects/Main/portType.java
@@ -0,0 +1,8 @@
+package com.codedifferently.lesson7.mohamedobjects.main;
+
+public enum portType {
+  VGA,
+  DVI,
+  HDMI,
+  DP
+}