JavaProject/Result.java at main · SakibPatwary/JavaProject · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
import java.util.Scanner;

public class Result{

    public static void main(String args[]){

        String username, password;

        Scanner s = new Scanner(System.in);

        System.out.print("\n Enter username:");//username:sakib
        username = s.nextLine();

        System.out.print("\n Enter password:");//password:1234
        password = s.nextLine();

        if(username.equals("sakib") && password.equals("1234"))
        {
            System.out.println("\n Authentication Successful!!");

			String grade = "";
			String[] letters = {"A+", "A", "B+", "B", "C+", "C", "D+", "D", "F"};

			double[] grades = {4.00, 3.75, 3.50, 3.25, 3.00, 2.75, 2.50, 2.25, 0.00};

			double credit1;
			double credit2;
			double credit3;
			double credit4;
			double gradeValue = 0;
			double grade1 = 0;
			double grade2 = 0;
			double grade3 = 0;
			double grade4 = 0;
			double totGrade = 0;
			double totalCredits = 0;
			double gpa;

			System.out.println("\n\n WELCOME TO GPA CALCULATOR [4 Subject]!\n");
			String message;

			String name;

			Scanner scan = new Scanner(System.in);
			System.out.print(" Enter your Name : ");
			name = scan.next();

			Scanner console = new Scanner(System.in);

			System.out.print("\n Enter 1st subject credit (2/3) : ");
			credit1 = console.nextDouble();
			System.out.print("\n Enter grades(A+/A/B+...) : ");
			grade = console.next();

			if (grade.equals("A+")) gradeValue = 4.00;
			else if (grade.equals("A")) gradeValue = 3.75;
			else if (grade.equals("B+")) gradeValue = 3.50;
			else if (grade.equals("B")) gradeValue = 3.25;
			else if (grade.equals("C+")) gradeValue = 3.00;
			else if (grade.equals("C")) gradeValue = 2.75;
			else if (grade.equals("D+")) gradeValue = 2.50;
			else if (grade.equals("D")) gradeValue = 2.25;
			else if (grade.equals("F")) gradeValue = 0.00;
			else System.out.println(" \nInvalid Grade!!");

			grade1 = gradeValue * credit1;

			System.out.print("\n Enter 2nd subject credit (2/3) : ");
			credit2 = console.nextDouble();
			System.out.print("\n Enter grades(A+/A/B+...) : ");
			grade = console.next();

			if (grade.equals("A+")) gradeValue = 4.00;
			else if (grade.equals("A")) gradeValue = 3.75;
			else if (grade.equals("B+")) gradeValue = 3.50;
			else if (grade.equals("B")) gradeValue = 3.25;
			else if (grade.equals("C+")) gradeValue = 3.00;
			else if (grade.equals("C")) gradeValue = 2.75;
			else if (grade.equals("D+")) gradeValue = 2.50;
			else if (grade.equals("D")) gradeValue = 2.25;
			else if (grade.equals("F")) gradeValue = 0.00;
			else System.out.println("\n Invalid Grade!!");

			grade2 = gradeValue * credit2;

			System.out.print("\n Enter 3rd subject credit (2/3) : ");
			credit3 = console.nextDouble();
			System.out.print("\n Enter grades(A+/A/B+...) : ");
			grade = console.next();

			if (grade.equals("A+")) gradeValue = 4.00;
			else if (grade.equals("A")) gradeValue = 3.75;
			else if (grade.equals("B+")) gradeValue = 3.50;
			else if (grade.equals("B")) gradeValue = 3.25;
			else if (grade.equals("C+")) gradeValue = 3.00;
			else if (grade.equals("C")) gradeValue = 2.75;
			else if (grade.equals("D+")) gradeValue = 2.50;
			else if (grade.equals("D")) gradeValue = 2.25;
			else if (grade.equals("F")) gradeValue = 0.00;
			else System.out.println("Invalid Grade!!");

			grade3 = gradeValue * credit3;

			System.out.print("\n Enter 4th subject credit (2/3) : ");
			credit4 = console.nextDouble();
			System.out.print("\n Enter grades(A+/A/B+...) : ");
			grade = console.next();

			if (grade.equals("A+")) gradeValue = 4.00;
			else if (grade.equals("A")) gradeValue = 3.75;
			else if (grade.equals("B+")) gradeValue = 3.50;
			else if (grade.equals("B")) gradeValue = 3.25;
			else if (grade.equals("C+")) gradeValue = 3.00;
			else if (grade.equals("C")) gradeValue = 2.75;
			else if (grade.equals("D+")) gradeValue = 2.50;
			else if (grade.equals("D")) gradeValue = 2.25;
			else if (grade.equals("F")) gradeValue = 0.00;
			else System.out.println("\n Invalid Grade!!");

			grade4 = gradeValue * credit4;

			totGrade = grade1 + grade2 + grade3 + grade4;
			totalCredits = credit1 + credit2 + credit3 + credit4;
			gpa = totGrade / totalCredits;


			System.out.println("\n Name: " +name);
			System.out.printf(" GPA : %.2f\n", +gpa);
    }


        else
        {
            System.out.println("\n Authentication Failed!!");
        }
	}

    }