diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..a0ccf77
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,5 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Environment-dependent path to Maven home directory
+/mavenHomeManager.xml
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..8923d78
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <annotationProcessing>
+      <profile name="Maven default annotation processors profile" enabled="true">
+        <sourceOutputDir name="target/generated-sources/annotations" />
+        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
+        <outputRelativeToContentRoot value="true" />
+        <module name="Springboot" />
+      </profile>
+    </annotationProcessing>
+  </component>
+  <component name="JavacSettings">
+    <option name="ADDITIONAL_OPTIONS_OVERRIDE">
+      <module name="Springboot" options="-parameters" />
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
new file mode 100644
index 0000000..00080cb
--- /dev/null
+++ b/.idea/encodings.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/Springboot/Springboot/src/main/java" charset="UTF-8" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml
new file mode 100644
index 0000000..712ab9d
--- /dev/null
+++ b/.idea/jarRepositories.xml
@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Central Repository" />
+      <option name="url" value="https://repo.maven.apache.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/java-springboot-debugging.iml b/.idea/java-springboot-debugging.iml
new file mode 100644
index 0000000..d6ebd48
--- /dev/null
+++ b/.idea/java-springboot-debugging.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..e0bac66
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/Springboot/Springboot/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_24" default="true" project-jdk-name="homebrew-24" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..2a00a55
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/java-springboot-debugging.iml" filepath="$PROJECT_DIR$/.idea/java-springboot-debugging.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/Springboot/Springboot/src/main/java/com/program/Springboot/service/impl/StudentServiceImpl.java b/Springboot/Springboot/src/main/java/com/program/Springboot/service/impl/StudentServiceImpl.java
index a2b71b2..9b44c81 100644
--- a/Springboot/Springboot/src/main/java/com/program/Springboot/service/impl/StudentServiceImpl.java
+++ b/Springboot/Springboot/src/main/java/com/program/Springboot/service/impl/StudentServiceImpl.java
@@ -11,10 +11,12 @@
 import com.program.Springboot.model.Student;
 import com.program.Springboot.service.StudentService;
 
-public class StudentServiceImpl extends StudentService {
+@Service
+public class StudentServiceImpl implements StudentService {
 
     // Simulated database (key = pkStudentID, value = Student object)
     private final Map<Long, Student> studentDB = new HashMap<>();
+    private Long counter = 1L;
 
     @Override
     public List<Student> getAllStudents() {
@@ -31,6 +33,13 @@ public Optional<Student> getStudentById(Long id) {
     @Override
     public Student addStudent(Student student) {
         // store student using their ID as the key
+
+        if(student.getPkStudentID() == 0){
+            student.setPkStudentID(counter++);
+        }
+
+        studentDB.put(student.getPkStudentID(), student);
+
         return student;
     }
 
@@ -56,7 +65,7 @@ public boolean deleteStudent(Long id) {
             studentDB.remove(id);
             return false;
         }
-        return true; 
+        return true;
     }
     
 }
\ No newline at end of file
diff --git a/Springboot/Springboot/src/main/resources/application.properties b/Springboot/Springboot/src/main/resources/application.properties
index 6f582e0..9ab9860 100644
--- a/Springboot/Springboot/src/main/resources/application.properties
+++ b/Springboot/Springboot/src/main/resources/application.properties
@@ -1,2 +1,2 @@
 spring.application.name=Springboot
-server.port = 9O90
+server.port = 9090
diff --git a/Springboot/Springboot/target/classes/application.properties b/Springboot/Springboot/target/classes/application.properties
index 6f582e0..9ab9860 100644
--- a/Springboot/Springboot/target/classes/application.properties
+++ b/Springboot/Springboot/target/classes/application.properties
@@ -1,2 +1,2 @@
 spring.application.name=Springboot
-server.port = 9O90
+server.port = 9090
diff --git a/Springboot/Springboot/target/classes/com/program/Springboot/SpringbootApplication.class b/Springboot/Springboot/target/classes/com/program/Springboot/SpringbootApplication.class
index 49e165c..a1c398b 100644
Binary files a/Springboot/Springboot/target/classes/com/program/Springboot/SpringbootApplication.class and b/Springboot/Springboot/target/classes/com/program/Springboot/SpringbootApplication.class differ
diff --git a/Springboot/Springboot/target/classes/com/program/Springboot/controller/StudentController.class b/Springboot/Springboot/target/classes/com/program/Springboot/controller/StudentController.class
index c7829b4..b606136 100644
Binary files a/Springboot/Springboot/target/classes/com/program/Springboot/controller/StudentController.class and b/Springboot/Springboot/target/classes/com/program/Springboot/controller/StudentController.class differ
diff --git a/Springboot/Springboot/target/classes/com/program/Springboot/model/Student.class b/Springboot/Springboot/target/classes/com/program/Springboot/model/Student.class
index 2c8d49e..aa1e567 100644
Binary files a/Springboot/Springboot/target/classes/com/program/Springboot/model/Student.class and b/Springboot/Springboot/target/classes/com/program/Springboot/model/Student.class differ
diff --git a/Springboot/Springboot/target/classes/com/program/Springboot/service/StudentService.class b/Springboot/Springboot/target/classes/com/program/Springboot/service/StudentService.class
index e2e27ce..c76f52e 100644
Binary files a/Springboot/Springboot/target/classes/com/program/Springboot/service/StudentService.class and b/Springboot/Springboot/target/classes/com/program/Springboot/service/StudentService.class differ
diff --git a/Springboot/Springboot/target/classes/com/program/Springboot/service/impl/StudentServiceImpl.class b/Springboot/Springboot/target/classes/com/program/Springboot/service/impl/StudentServiceImpl.class
index d031ff7..99f35d0 100644
Binary files a/Springboot/Springboot/target/classes/com/program/Springboot/service/impl/StudentServiceImpl.class and b/Springboot/Springboot/target/classes/com/program/Springboot/service/impl/StudentServiceImpl.class differ