👔 Finish early model

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

src/model/Promotion.java

@@ -0,0 +1,14 @@
+package model;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class Promotion implements Serializable {
+    private final List<Student> students = new ArrayList<>();
+
+    public List<Student> getStudents() {
+        return Collections.unmodifiableList(students);
+    }
+}

src/model/Student.java

@@ -1,4 +1,27 @@
 package model;
 
-public class Student {
+import java.io.Serializable;
+
+public class Student implements Serializable {
+
+    private final String lastname;
+
+    private String firstName;
+
+    public Student(String lastname, String firstName) {
+        this.lastname = lastname;
+        this.firstName = firstName;
+    }
+
+    public String getLastname() {
+        return lastname;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
 }