diff --git a/src/main/java/id/ac/ui/cs/advprog/tutorial0/controller/StudentController.java b/src/main/java/id/ac/ui/cs/advprog/tutorial0/controller/StudentController.java
new file mode 100644
index 0000000000000000000000000000000000000000..6e51fabd697e784ee8a63019c0db3e8a11f9fa16
--- /dev/null
+++ b/src/main/java/id/ac/ui/cs/advprog/tutorial0/controller/StudentController.java
@@ -0,0 +1,44 @@
+package id.ac.ui.cs.advprog.tutorial0.controller;
+
+import id.ac.ui.cs.advprog.tutorial0.exception.DuplicateStudentNameException;
+import id.ac.ui.cs.advprog.tutorial0.model.Student;
+import id.ac.ui.cs.advprog.tutorial0.service.StudentService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@Controller
+@RequestMapping("/student")
+public class StudentController {
+ @Autowired
+ private StudentService service;
+
+ @GetMapping("/list")
+ public String studentListPage(Model model) {
+ List<Student> allStudents = service.findAll();
+ model.addAttribute("students", allStudents);
+ return "studentList";
+ }
+
+ @GetMapping("/create")
+ public String createStudentPage(Model model) {
+ Student student = new Student();
+ model.addAttribute("student", student);
+ return "createStudent";
+ }
+
+ @PostMapping("/create")
+ public String createStudentPost(@ModelAttribute Student student, Model model) {
+ try {
+ service.create(student);
+ } catch (DuplicateStudentNameException e) {
+ model.addAttribute("error", e);
+ model.addAttribute("student", student);
+ return "createStudent";
+ }
+ return "redirect:list";
+ }
+}
diff --git a/src/main/java/id/ac/ui/cs/advprog/tutorial0/exception/DuplicateStudentNameException.java b/src/main/java/id/ac/ui/cs/advprog/tutorial0/exception/DuplicateStudentNameException.java
new file mode 100644
index 0000000000000000000000000000000000000000..9702548bc3c2393998ee982938f5799c89e633ca
--- /dev/null
+++ b/src/main/java/id/ac/ui/cs/advprog/tutorial0/exception/DuplicateStudentNameException.java
@@ -0,0 +1,9 @@
+package id.ac.ui.cs.advprog.tutorial0.exception;
+
+public class DuplicateStudentNameException extends RuntimeException{
+
+ public DuplicateStudentNameException(String studentName) {
+ super(String.format("The student name %s is a duplicate!",studentName));
+ }
+
+}
diff --git a/src/main/java/id/ac/ui/cs/advprog/tutorial0/model/Student.java b/src/main/java/id/ac/ui/cs/advprog/tutorial0/model/Student.java
new file mode 100644
index 0000000000000000000000000000000000000000..89e4a0049587e013270f2c4db7d1d93552c36fde
--- /dev/null
+++ b/src/main/java/id/ac/ui/cs/advprog/tutorial0/model/Student.java
@@ -0,0 +1,13 @@
+package id.ac.ui.cs.advprog.tutorial0.model;
+
+import lombok.Getter;
+import lombok.Setter;
+
+@Getter @Setter
+public class Student {
+ private String name;
+ private String npm;
+ private String address;
+
+
+}
diff --git a/src/main/java/id/ac/ui/cs/advprog/tutorial0/repository/StudentRepository.java b/src/main/java/id/ac/ui/cs/advprog/tutorial0/repository/StudentRepository.java
new file mode 100644
index 0000000000000000000000000000000000000000..91ac5f2bcd45697b0e09538fa7a3bcfbb3fbca66
--- /dev/null
+++ b/src/main/java/id/ac/ui/cs/advprog/tutorial0/repository/StudentRepository.java
@@ -0,0 +1,22 @@
+package id.ac.ui.cs.advprog.tutorial0.repository;
+
+import id.ac.ui.cs.advprog.tutorial0.model.Student;
+import org.springframework.stereotype.Repository;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+@Repository
+public class StudentRepository {
+
+ private List<Student> studentsInMemory = new ArrayList<>();
+ public Student create(Student student) {
+ studentsInMemory.add(student);
+ return student;
+ }
+
+ public Iterator<Student> findAll(){
+ return studentsInMemory.iterator();
+ }
+}
diff --git a/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentService.java b/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentService.java
new file mode 100644
index 0000000000000000000000000000000000000000..2b937842806fd694506b450bb2b17b63af1dd08a
--- /dev/null
+++ b/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentService.java
@@ -0,0 +1,10 @@
+package id.ac.ui.cs.advprog.tutorial0.service;
+
+import id.ac.ui.cs.advprog.tutorial0.model.Student;
+import java.util.List;
+
+
+public interface StudentService {
+ public Student create(Student student);
+ public List<Student> findAll();
+}
diff --git a/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentServiceImpl.java b/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentServiceImpl.java
new file mode 100644
index 0000000000000000000000000000000000000000..d83d3f4837e8cd412843304d6f9023cbf7e78ded
--- /dev/null
+++ b/src/main/java/id/ac/ui/cs/advprog/tutorial0/service/StudentServiceImpl.java
@@ -0,0 +1,52 @@
+package id.ac.ui.cs.advprog.tutorial0.service;
+
+import id.ac.ui.cs.advprog.tutorial0.exception.DuplicateStudentNameException;
+import id.ac.ui.cs.advprog.tutorial0.model.Student;
+import id.ac.ui.cs.advprog.tutorial0.repository.StudentRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+@Service
+public class StudentServiceImpl implements StudentService{
+ @Autowired
+ private StudentRepository studentRepository;
+
+ @Override
+ public Student create(Student student) {
+ validateName(student);
+ generateNPM(student);
+ studentRepository.create(student);
+ return student;
+ }
+
+ private void validateName(Student student) {
+ List<Student> allStudents = findAll();
+ for(Student dbStudent: allStudents) {
+ if(dbStudent.getName().equals(student.getName())) {
+ throw new DuplicateStudentNameException(student.getName());
+ }
+ }
+
+ }
+
+ private void generateNPM(Student student) {
+ StringBuilder stringBuilder = new StringBuilder();
+ for (char letter: student.getName().toCharArray()) {
+ stringBuilder.append(String.valueOf((int)letter));
+ }
+ String npm = stringBuilder.toString();
+ student.setNpm(npm);
+ }
+
+ @Override
+ public List<Student> findAll() {
+ Iterator<Student> studentIterator = studentRepository.findAll();
+ List<Student> allStudents = new ArrayList<>();
+ studentIterator.forEachRemaining(allStudents::add);
+ return allStudents;
+ }
+}
diff --git a/src/main/resources/templates/StudentList.html b/src/main/resources/templates/StudentList.html
new file mode 100644
index 0000000000000000000000000000000000000000..84ab6ad54e0980ae984cb2585ad00f446513b60c
--- /dev/null
+++ b/src/main/resources/templates/StudentList.html
@@ -0,0 +1,34 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:th="http://www.thymeleaf.org">
+<head>
+ <meta charset="UTF-8">
+ <title>Student List</title>
+ <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
+</head>
+<body>
+
+<h2>Student' List</h2>
+<a th:href="@{/student/create}" class="btn btn-primary btn-sm mb-3" >Create student</a>
+
+<table class="table">
+ <thead>
+ <tr>
+ <th scope="col">Name</th>
+ <th scope="col">NPM</th>
+ <th scope="col">Address</th>
+ </tr>
+ </thead>
+ <tbody th:each="student: ${students}">
+ <tr>
+ <td th:text="${student.name}"></td>
+ <td th:text="${student.npm}"></td>
+ <td th:text="${student.address}"></td>
+ </tr>
+
+ </tbody>
+</table>
+
+
+<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
+</body>
+</html>
\ No newline at end of file
diff --git a/src/main/resources/templates/createStudent.html b/src/main/resources/templates/createStudent.html
new file mode 100644
index 0000000000000000000000000000000000000000..f1421995de003aefde579c2b6ac2b33517019a7e
--- /dev/null
+++ b/src/main/resources/templates/createStudent.html
@@ -0,0 +1,27 @@
+<!DOCTYPE html>
+<html lang="en" xmlns:th="http://www.thymeleaf.org">
+<head>
+ <meta charset="UTF-8">
+ <title>Create new Student</title>
+ <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
+</head>
+<body>
+<h3>Create new Student</h3>
+<div th:if="${error!=null}" class="alert alert-danger" role="alert">
+ Duplicate student name
+</div>
+<form th:action="@{/student/create}" th:object="${student}" method="post">
+ <div class="form-group">
+ <label for="nameInput">Name</label>
+ <input th:field="*{name}" type="text" class="form-control" id="nameInput" aria-describedby="nameHelp" placeholder="Enter student' name">
+ <small id="nameHelp" class="form-text text-muted">Please enter unique name.</small>
+ </div>
+ <div class="form-group">
+ <label for="addressTextarea">Address</label>
+ <textarea th:field="*{address}" class="form-control" id="addressTextarea" rows="3"></textarea>
+ </div>
+ <button type="submit" class="btn btn-primary">Submit</button>
+</form>
+<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/js/bootstrap.bundle.min.js" integrity="sha384-ka7Sk0Gln4gmtz2MlQnikT1wXgYsOg+OMhuP+IlRH9sENBO0LRn5q+8nbTov4+1p" crossorigin="anonymous"></script>
+</body>
+</html>
\ No newline at end of file