Assignment-01 & Assignment-02

assignment-02/H071191028/App.java

@@ -0,0 +1,15 @@
+public class App {
+    public static void main(String[] args) throws Exception{
+        Login login = Login.getInstance();
+
+        login.auth("naim", "Naim");
+        login.status();
+        login.logout();
+
+        System.out.println("");
+
+        login.auth("Farha", "parhan");
+        login.status();
+        login.logout();
+    }
+}

assignment-02/H071191028/DataSource.java

@@ -0,0 +1,81 @@
+import java.util.HashMap;
+import java.util.Map;
+import java.io.FileReader;
+import java.io.BufferedReader;
+
+public class DataSource {
+    private static DataSource dataSource;
+    private Map<String, User> userMap = new HashMap<>();
+    private Map<Integer, UserDetail> userDetailMap = new HashMap<>();
+
+    private DataSource() {
+        try{
+            putUserDetail();
+            putUser();
+        } catch(Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static DataSource getInstance() {
+        if(dataSource == null){
+            dataSource = new DataSource();
+        }
+        return dataSource;
+    }
+
+    private void putUserDetail() throws Exception{
+
+        BufferedReader br = new BufferedReader(new FileReader("UserDetail.txt"));
+        String data[];
+        while(br.ready()){
+            data = br.readLine().split(";");
+
+            if(isInteger(data[0])){
+                userDetailMap.put(Integer.valueOf(data[0]),
+                        new UserDetail(Integer.valueOf(data[0]), data[1], data[2], data[3]));
+
+            }
+        }
+        data = null;
+        br.close();
+    }
+
+    private void putUser() throws Exception{
+
+        BufferedReader br = new BufferedReader(new FileReader("User.txt"));
+        String data[];
+        while(br.ready()){
+            data = br.readLine().split(";");
+
+            if(isInteger(data[0])){
+                userMap.put(data[1], new User(Integer.valueOf(data[0]), data[1], data[2],
+                        userDetailMap.get(Integer.valueOf(data[0]))));
+            }
+        } 
+        data = null;
+        br.close();
+    }
+
+    public User getUser(String key) {
+        return userMap.get(key);
+    }
+    public UserDetail getUserDetail(int key) {
+        return userDetailMap.get(key);
+    }
+
+    public static boolean isInteger(String s) {
+
+        boolean isValidInteger = false;
+        try {
+            Integer.parseInt(s);
+
+
+            isValidInteger = true;
+        } catch (NumberFormatException ex) {
+
+        }
+
+        return isValidInteger;
+    }
+}

assignment-02/H071191028/Login.java

@@ -0,0 +1,58 @@
+import java.util.NoSuchElementException;
+
+public class Login {
+
+    private static Login login;
+    private User user;
+    private UserDetail userDetail;
+    private DataSource dataSource;
+
+    private Login() {
+       dataSource = DataSource.getInstance();
+    }
+
+    public static Login getInstance() {
+        if(login == null){
+            login = new Login();
+        }
+        return login;
+    }
+    public void auth(String userName, String password) throws NoSuchElementException {
+
+        user = dataSource.getUser(userName);
+        try {
+            if(user.verifyPassword(password)){
+                userDetail = user.getUserDetail();
+            } else {
+                System.out.println("Invalid Password");
+            }
+        } catch (Exception e) {
+
+            throw new NoSuchElementException("No such Username : " + userName);
+        }
+    }
+
+    public void status() {
+
+        try{
+            System.out.printf("Name\t\t: %s\n", userDetail.getName());
+            System.out.printf("Email\t\t: %s\n", userDetail.getEmail());
+            System.out.printf("Date of Birth\t: %s\n", userDetail.getDateOfBirth());
+            System.out.printf("Username\t: %s\n", user.getUsername());
+            System.out.printf("Password\t: %s\n", user.getPassword());
+        } catch (Exception e) {
+            System.out.println("Not Logged in");
+        }
+    }
+
+    public void logout() {
+
+        if(user != null){
+            user.logout();
+            user = null;
+            userDetail = null;
+        } else {
+            System.out.println("Not logged in");
+        }
+    }
+} 

assignment-02/H071191028/User.java

@@ -0,0 +1,76 @@
+public class User {
+
+    private int id;
+    private String userName;
+    private String password;
+    private UserDetail userDetail; 
+    private boolean authenticated = false; 
+
+    public User(int id, String userName, String password, UserDetail userDetail) {
+        this.id = id;
+        this.userName = userName;
+        this.password = password;
+        this.userDetail = userDetail;
+    }
+
+    public UserDetail geUserDetail() {
+        if (authenticated) {
+            return userDetail;
+        } else {
+            System.out.println("Not Authenticated");
+            return null;
+        }
+    }
+
+    public int getId() {
+        if (authenticated) {
+            return id;
+        } else {
+            System.out.println("Not Authenticated");
+            return 0;
+        }
+    }
+
+    public boolean verifyPassword(String password) {
+
+        if(this.password.equals(password)) {
+
+            authenticated = true;
+            return true;
+        } else {
+
+            return false;
+        }
+    }
+
+    public String getUsername() {
+        if (authenticated) {
+            return userName;
+        } else {
+            System.out.println("Not Authenticated");
+            return null;
+        }
+    }
+
+    public UserDetail getUserDetail() {
+        if (authenticated) {
+            return userDetail;
+        } else {
+            System.out.println("Not Authenticated");
+            return null;
+        }
+    }
+
+    public String getPassword() {
+        if (authenticated) {
+            return password;
+        } else {
+            System.out.println("Not Authenticated");
+            return null;
+        }
+    }
+
+    public void logout() {
+        authenticated = false;
+    }
+}

assignment-02/H071191028/UserDetail.java

@@ -0,0 +1,30 @@
+public class UserDetail {
+
+    private Integer id;
+    private String name;
+    private String dateOfBirth;
+    private String email;
+
+    public UserDetail(Integer id, String name, String dateOfBirth, String email) {
+        this.id = id;
+        this.name = name;
+        this.dateOfBirth = dateOfBirth;
+        this.email = email;
+    }
+    public Integer getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getDateOfBirth() {
+        return dateOfBirth;
+    }
+
+    public String getEmail() {
+        return email;
+    }
+
+} 

assignment-02/H071191028/UserDetail.txt

@@ -0,0 +1,5 @@
+1;Muhammad Fitrah;04-09-1998;[email protected]
+2;Muhammad Arizki;00-00-0000;[email protected]
+3;Kennedy;00-02-2000;[email protected]
+4;Muhammad Muflihun Naim;00-00-0000;[email protected]
+5;Farhan Ramdhani;00-00-0000;[email protected]

assignment-02/H071191028/user.txt

@@ -0,0 +1,5 @@
+1;fitrh;12345678
+2;arzk;qwerty
+3;ken;asdf
+4;naim;Naim
+5;farhan;Parhan

assigntment-01/H071191028/Student.java

@@ -0,0 +1,82 @@
+import java.util.*;
+public class Student{
+    private String id;
+    private String firstName;
+    private String lastName;
+    private String email;
+    private int registerYear;
+    private String faculty;
+    private String departemen;
+    private String major;
+
+    public void setId(Map <String, String> facultyMap, Map <String, String> majorMap) {
+        Random random = new Random();
+        id = facultyMap.get(faculty) + majorMap.get(major) + "1" + getRegisterYear()%100 + "1" + (random.nextInt(60) + 1);
+    }
+    public void setFirstname(String firstName){
+        this.firstName = firstName;
+    }
+    public void setLastname(String lastName){
+        this.lastName = lastName;
+    }
+    public void setEmail(Map <String,String> facultyMap) {
+
+        String arr[] = getFullName().split(" ");
+        email = "";
+        email += arr[arr.length-1].toLowerCase();
+        for (int i = 0; i < arr.length - 1; i++){
+            email += (arr[i].substring(0,1).toLowerCase());
+        }
+        email += getRegisterYear()%100;
+        email += facultyMap.get(faculty).toLowerCase();
+        email += "@student.unhas.ac.id";
+    }
+    public void setRegisterYear(int registerYear){
+        this.registerYear = registerYear;
+    }
+    public void setFaculty(String faculty){
+        this.faculty = faculty;
+    }
+    public void setDepartemen(String departemen){
+        this.departemen = departemen;
+    }
+    public void setMajor(String major){
+        this.major = major;
+    }
+    public String getId(){
+        return id;
+    }
+    public String getEmail(){
+        return email;
+    }
+    public String getFaculty(){
+        return faculty;
+    }
+    public String getDepartemen(){
+        return departemen;
+    }
+    public String getMajor(){
+        return major;
+    }
+    public int getRegisterYear(){
+        return registerYear;
+    }
+    public String getFullName(){
+        String lowerString = (firstName + " " + lastName).toLowerCase();
+        String fullName = "";
+        String arr[] = lowerString.split(" ");
+        for (int i = 0; i < arr.length; i++){
+            fullName += arr[i].charAt(0) + arr[i].substring(1,arr[i].length()) + " ";
+        }
+        return fullName;
+    }
+    public void desc() {
+        System.out.println("Nama             : " +getFullName());
+        System.out.println("NIM              : " + getId());
+        System.out.println("Email Mahasiswa  : " + getEmail());
+        System.out.println("Fakultas         : " + getFaculty());
+        System.out.println("Departemen       : " +getDepartemen());
+        System.out.println("Program Studi    : " + getMajor());
+        System.out.println();
+    }
+}