Ahmad Alsowayan - Level-1.4

Level-1.4.iml

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+<?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://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

src/Main.java

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+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.InputMismatchException;
+import java.util.Scanner;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.PrintWriter;
+import java.io.FileNotFoundException;
+public class Main{
+    static ArrayList<Student> studentList;
+    public static void main(String[] args) throws FileNotFoundException {
+        studentList = initialize();
+        Scanner input = new Scanner(System.in);
+        boolean flag = true;
+
+        do{
+         try{
+             System.out.print("""
+                     Please select one of the following operations:
+                     1- Add a new student
+                     2- View student info in records
+                     3- Exit program
+                     """);
+
+             short choice = input.nextShort();
+
+             switch( choice ){
+                 case 1:
+                     int id;
+                     String fName, lName;
+                     System.out.print("Please insert ID: ");
+                     id = input.nextInt();
+                     if(find(id) != -1)
+                         throw new IllegalArgumentException("ID already exists!");
+
+                     System.out.print("Please insert first name: ");
+                     fName = input.next();
+                     System.out.print("Please insert last name: ");
+                     lName = input.next();
+
+                     Student temp = new Student(id, fName, lName);
+                     System.out.println("Please insert the amount of absences in the following subjects (out of 50):");
+                     for(short i = 0; i < 4; i++){
+                         String[] courseList = {"Math", "Phys", "Chem", "Comp"};
+                         short attendanceNum;
+                         System.out.printf("%s: ", courseList[i]);
+                         attendanceNum = input.nextShort();
+                         temp.setAttendance(attendanceNum, i);
+                     }
+
+                     System.out.print("Any excused absences? (y/n): ");
+                     if(input.next().toLowerCase().charAt(0) == 'y'){
+                         input.nextLine();
+                         System.out.print("Please insert ALL excuses here: ");
+                         Scanner reader = new Scanner(input.nextLine());
+                         while(reader.hasNext())
+                             if( reader.next().equalsIgnoreCase("hospital"))
+                                 temp.attendanceIncrease();
+                         reader.close();
+                     }
+                     else input.nextLine();
+
+                     System.out.print("Please insert grade (0.0 - 5.0): ");
+                     temp.setGpa(input.nextDouble());
+
+
+                     view(temp);
+                     studentList.add(temp);
+                     break;
+
+                 case 2:
+                     int index;
+                     System.out.print("Please insert student ID here: ");
+                     index = find(input.nextInt());
+                     if(index == -1)
+                         throw new IllegalArgumentException("ID not in records!");
+                     view(studentList.get(index));
+                     break;
+
+                 case 3:
+                     flag = false;
+
+
+             }
+         }
+         catch(InputMismatchException e){
+             System.err.println("Wrong type of input!");
+             input.nextLine();
+         }
+         catch (IllegalArgumentException f){
+             System.err.println(f.getMessage());
+         }
+         finally {
+             System.out.println("-----------------------------------------------------------------------------\n");
+         }
+        }
+        while(flag);
+
+
+
+
+
+
+
+        save();
+    }
+
+    static ArrayList<Student> initialize(){
+        ArrayList<Student> temp = new ArrayList<>();
+        try{
+            Scanner reader = new Scanner( new FileInputStream("studentList.txt"));
+            while(reader.hasNext() ) {
+                temp.add(new Student(reader.nextInt(), reader.next(), reader.next()));
+                for (short i = 0; i < 4; i++)
+                    temp.getLast().setAttendance(reader.nextShort(), i);
+                temp.getLast().setGpa(reader.nextDouble());
+            }
+        }
+        catch(FileNotFoundException e){
+            new File("studentList.txt");
+            return new ArrayList<>();
+        }
+        return temp;
+    }
+
+    static void save() throws FileNotFoundException {
+        PrintWriter pout = new PrintWriter(new FileOutputStream("studentList.txt"));
+        for(Student i : studentList ) {
+            pout.print(String.format("%d\t%s\t", i.getID(), i.getName()));
+            for(short j : i.getAttendanceList())
+                pout.print(j + "\t");
+            pout.println(i.getGPA());
+        }
+        pout.close();
+    }
+
+    static int find(int id){
+        for(int i = 0; i < studentList.size(); i++)
+            if(id == studentList.get(i).getID())
+                return i;
+        return -1;
+    }
+
+    static void view(Student std){
+        System.out.printf("-----------------------------------------------------------------------------\nID: %d\nName: %s\nATTENDANCE [MATH, PHYS, CHEM, COMP]:\n%s\nGPA: %.2f\n\n%s\n",std.getID(),std.getName(), Arrays.toString(std.getAttendanceList()), std.getGPA(),std.getStatus());
+    }
+}

src/Student.java

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+public class Student {
+    private final int ID;
+    private final String NAME;
+    private double gpa;
+
+
+
+    //Math: 0   Phys: 1  Chem: 2    Prog: 3
+    private static final short attendanceLimit[] = {44,42,40,47};
+    private final short[] attendanceList = new short[4];
+
+    public Student(int id, String fName, String lName){
+        ID = id;
+        NAME = String.format("%s\t%s",fName,lName);
+    }
+
+    public int getID(){
+        return ID;
+    }
+
+    public String getName(){
+        return NAME;
+    }
+
+    public double getGPA(){
+        return gpa;
+    }
+
+    public short[] getAttendanceList(){
+        return attendanceList;
+    }
+
+    public void setGpa(double newGrade)throws IllegalArgumentException{
+        if(newGrade > 5 || newGrade < 0)
+            throw new IllegalArgumentException("Inserted grade is not within acceptable range.");
+        else gpa = newGrade;
+    }
+
+    public void setAttendance(short absenceNum, short courseIndex){
+        if(absenceNum > 50 || absenceNum < 0)
+            throw new IllegalArgumentException("Attendance number not within range!");
+        attendanceList[ courseIndex ] = absenceNum;
+    }
+
+    public void attendanceIncrease(){
+        for(short i = 0; i < attendanceList.length; i++)
+            if(attendanceList[i] < 50)
+                setAttendance((short) (attendanceList[i] + 1), i);
+    }
+
+    public String getStatus(){
+        for(short i = 0; i < 4; i++)
+            if(attendanceList[i] < attendanceLimit[i])
+                return "FAIL";
+        if( getGPA() < 3.5)
+            return "FAIL";
+        return "PASS";
+    }
+}

studentList.txt

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+310	Super	Mario	50	50	50	50	5.0
+935	Edward	Richtofen	41	43	41	49	4.5