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‎src/java_labs/lab_5/Lab.java‎

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/*
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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--||author : codechaser||--
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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package java_labs.lab_4;
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import java.util.*;
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import java.io.*;
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public class Lab {
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public static void start() {
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Scanner input = new Scanner(System.in);
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while(true) {
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System.out.println("\n\n---------------------------");
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System.out.println(" | L A B 5 |");
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System.out.println("---------------------------\n");
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System.out.println("[01] : Problem 1");
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System.out.println("[02] : Problem 2");
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System.out.println("[03] : Problem 3");
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System.out.println("[04] : Problem 4");
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System.out.println("[05] : Problem 5\n");
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System.out.println("[-1] : Exit\n");
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System.out.println("---------------------------\n");
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System.out.println("Enter your choice :\n");
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int choice = input.nextInt();
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System.out.println("\n---------------------------\n");
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if (choice == -1) {
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System.out.println("Exiting...\n");
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System.out.println("---------------------------\n");
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return;
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}
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switch (choice) {
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case 1:
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java_labs.lab_4.problem_1.Problem1.start();
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break;
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case 2:
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java_labs.lab_4.problem_2.Problem2.start();
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break;
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case 3:
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java_labs.lab_4.problem_3.Problem3.start();
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break;
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case 4:
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java_labs.lab_4.problem_4.Problem4.start();
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break;
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case 5:
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java_labs.lab_4.problem_5.Problem5.start();
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break;
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default:
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System.out.println("\nInvalid Choice");
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}
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System.out.println("\n---------------------------\n");
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}
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}
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public static void main(String[] args){
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start();
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return;
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}
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}
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/*
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|---------------------------------------------------|
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||| https://codeforces.com/profile/codechaser |||
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||| https://www.codechef.com/users/codechaser |||
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||| https://github.com/code-chaser |||
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|---------------------------------------------------|
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*/

‎src/java_labs/lab_5/problem_1/Problem1.java‎

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/*
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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--||author : codechaser||--
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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package java_labs.lab_4.problem_1;
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import java.util.*;
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import java.io.*;
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import java_labs.lab_4.problem_1.MCA.Student;
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public class Problem1 {
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public static void start() {
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int students = 0;
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Vector<Student> studentsList = new Vector<Student>(1);
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while (true) {
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Scanner input = new Scanner(System.in);
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System.out.println("\n\n---------------------------");
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System.out.println(" S C H O O L");
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System.out.println("---------------------------\n");
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System.out.println("[01] : Add a new student");
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System.out.println("[02] : Update a students' marks");
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System.out.println("[03] : Print a student's details");
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System.out.println("[04] : Print all students' details\n");
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System.out.println("[-1] : Exit\n");
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System.out.println("---------------------------\n");
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System.out.println("Enter your choice :\n");
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int choice = input.nextInt();
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String temp = input.nextLine();
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System.out.println("\n---------------------------\n");
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if (choice == -1) {
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System.out.println("Exiting...\n");
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System.out.println("---------------------------\n");
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return;
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}
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String name;
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int roll, standard;
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double totalMarks, percentage, marksA, marksB, marksC, marksD, marksE;
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switch (choice) {
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case 1:
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System.out.println("\nEnter Student's Name: ");
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name = input.nextLine();
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System.out.println("\nEnter Student's Standard: ");
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standard = input.nextInt();
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temp = input.nextLine();
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System.out.println("\nNOTE: Enter all marks out of 100");
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System.out.println("\nEnter Student's marks in Computer Science: ");
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marksA = input.nextDouble();
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temp = input.nextLine();
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System.out.println("\nEnter Student's marks in Mathematics: ");
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marksB = input.nextDouble();
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temp = input.nextLine();
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System.out.println("\nEnter Student's marks in Physics: ");
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marksC = input.nextDouble();
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temp = input.nextLine();
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System.out.println("\nEnter Student's marks in Chemistry: ");
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marksD = input.nextDouble();
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temp = input.nextLine();
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System.out.println("\nEnter Student's marks in English: ");
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marksE = input.nextDouble();
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temp = input.nextLine();
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students++;
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Student S = new Student(name, students, standard, marksA, marksB, marksC, marksD, marksE);
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studentsList.add(S);
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System.out.println("\n" + name + " successfully added, their Roll Number is " + students + ".");
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System.out.println("\n---------------------------\n");
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break;
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case 2:
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System.out.println("\nEnter Student's Roll Number: ");
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roll = input.nextInt();
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temp = input.nextLine();
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if (roll < 1 || roll > students) {
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System.out.println("\nInvalid Roll Number!");
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System.out.println("\n---------------------------\n");
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break;
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}
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System.out.println("\nNOTE: Enter all marks out of 100");
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System.out.println("\nEnter Student's marks in Computer Science: ");
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marksA = input.nextDouble();
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temp = input.nextLine();
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System.out.println("\nEnter Student's marks in Mathematics: ");
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marksB = input.nextDouble();
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temp = input.nextLine();
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System.out.println("\nEnter Student's marks in Physics: ");
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marksC = input.nextDouble();
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temp = input.nextLine();
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System.out.println("\nEnter Student's marks in Chemistry: ");
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marksD = input.nextDouble();
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temp = input.nextLine();
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System.out.println("\nEnter Student's marks in English: ");
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marksE = input.nextDouble();
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temp = input.nextLine();
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studentsList.get(roll - 1).updateMarks(marksA, marksB, marksC, marksD, marksE);
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System.out.println("\nMarks updated successfully!");
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System.out.println("\n---------------------------\n");
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break;
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case 3:
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System.out.println("\nEnter Student's Roll Number: ");
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roll = input.nextInt();
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temp = input.nextLine();
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if (roll < 1 || roll > students) {
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System.out.println("\nInvalid Roll Number!");
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System.out.println("\n---------------------------\n");
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break;
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}
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System.out.println("\nDetails: \n");
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studentsList.get(roll - 1).display();
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totalMarks = studentsList.get(roll - 1).marksA + studentsList.get(roll - 1).marksB
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+ studentsList.get(roll - 1).marksC + studentsList.get(roll - 1).marksD
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+ studentsList.get(roll - 1).marksE;
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percentage = totalMarks / 5;
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System.out.print("\nTotal Marks: " + totalMarks);
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System.out.print("\nPercentage: " + percentage + "\n");
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System.out.println("\n---------------------------\n");
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break;
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case 4:
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System.out.println("\nDetails: \n");
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for (int i = 0; i < students; i++) {
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studentsList.get(i).display();
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totalMarks = studentsList.get(i).marksA + studentsList.get(i).marksB
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+ studentsList.get(i).marksC + studentsList.get(i).marksD + studentsList.get(i).marksE;
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percentage = totalMarks / 5;
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System.out.print("\nTotal Marks: " + totalMarks);
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System.out.print("\nPercentage: " + percentage + "\n");
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}
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System.out.println("\n--------------------------\n");
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break;
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default:
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System.out.println("\nInvalid Choice");
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System.out.println("\n---------------------------\n");
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}
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}
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}
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public static void main(String[] Args) {
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start();
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return;
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}
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}
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/*
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|---------------------------------------------------|
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||| https://codeforces.com/profile/codechaser |||
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||| https://www.codechef.com/users/codechaser |||
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||| https://github.com/code-chaser |||
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|---------------------------------------------------|
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*/

‎src/java_labs/lab_5/problem_1/citizen/Citizen.java‎

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/*
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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--||author : codechaser||--
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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package java_labs.lab_5.problem_1.citizen;
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import java.util.*;
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import java.io.*;
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public class Student {
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private String name = "";
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private int roll, standard;
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public double marksA, marksB, marksC, marksD, marksE;
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public Student(String name, int roll, int standard, double marksA, double marksB, double marksC, double marksD,
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double marksE) {
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this.name = name;
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this.roll = roll;
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this.standard = standard;
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this.marksA = marksA;
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this.marksB = marksB;
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this.marksC = marksC;
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this.marksD = marksD;
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this.marksE = marksE;
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}
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public void updateMarks(double marksA, double marksB, double marksC, double marksD, double marksE) {
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this.marksA = marksA;
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this.marksB = marksB;
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this.marksC = marksC;
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this.marksD = marksD;
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this.marksE = marksE;
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return;
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}
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public void display() {
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System.out.print("\n\nName: " + this.name);
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System.out.print("\nRoll Number: " + this.roll);
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System.out.print("\nStandard: " + this.standard);
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System.out.print("\nMarks in Computer Science: " + this.marksA);
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System.out.print("\nMarks in Mathematics: " + this.marksB);
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System.out.print("\nMarks in Physics: " + this.marksC);
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System.out.print("\nMarks in Chemistry: " + this.marksD);
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System.out.print("\nMarks in English: " + this.marksE + "\n\n");
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return;
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}
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}
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/*
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|---------------------------------------------------|
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||| https://codeforces.com/profile/codechaser |||
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||| https://www.codechef.com/users/codechaser |||
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||| https://github.com/code-chaser |||
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|---------------------------------------------------|
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*/

‎src/java_labs/lab_5/problem_2/Problem2.java‎

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/*
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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--||author : codechaser||--
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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package java_labs.lab_4.problem_2;
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import java.util.*;
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import java.io.*;
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import java_labs.lab_4.problem_2.car.Car;
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import java_labs.lab_4.problem_2.vehicle.Vehicle;
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public class Problem2 {
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public static void start() {
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Car car = new Car("52WVC10338", "2.7L 4X2 MT Fortuner", "Toyota", "MKCL287987463892", "SUV", 7);
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Vehicle vehicle = new Vehicle("83WST28493", "10L Crusher Truck", "Mahindra", "JUYN287987463343");
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while (true) {
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Scanner input = new Scanner(System.in);
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double a, b;
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System.out.println("\n\n---------------------------");
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System.out.println("\n V E H I C L E S\n");
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System.out.println("---------------------------\n");
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System.out.println("[01] : Print Car Details");
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System.out.println("[02] : Print Vehicle Details\n");
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System.out.println("[-1] : Exit\n");
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System.out.println("---------------------------\n");
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System.out.println("Enter your choice :\n");
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int choice = input.nextInt();
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String temp = input.nextLine();
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System.out.println("\n---------------------------\n");
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if (choice == -1) {
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System.out.println("Exiting...\n");
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System.out.println("---------------------------\n");
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return;
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}
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switch (choice) {
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case 1:
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car.display();
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System.out.print("\n---------------------------\n");
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break;
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case 2:
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vehicle.display();
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System.out.print("\n---------------------------\n");
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break;
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default:
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System.out.println("\nInvalid Choice");
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System.out.println("\n---------------------------\n");
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break;
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}
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}
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}
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public static void main(String[] Args) {
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start();
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return;
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}
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}
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/*
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|---------------------------------------------------|
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||| https://codeforces.com/profile/codechaser |||
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||| https://www.codechef.com/users/codechaser |||
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||| https://github.com/code-chaser |||
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|---------------------------------------------------|
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*/

‎src/java_labs/lab_5/problem_2/car/Car.java‎

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/*
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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--||author : codechaser||--
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~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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package java_labs.lab_4.problem_2.car;
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import java.util.*;
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import java.io.*;
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import java_labs.lab_4.problem_2.vehicle.Vehicle;
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public class Car extends Vehicle {
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private String type;
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private int capacity;
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public Car(String engine, String model, String manufacturer, String chassis, String type, int capacity) {
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super(engine, model, manufacturer, chassis);
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this.type = type;
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this.capacity = capacity;
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}
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public void display() {
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super.display();
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System.out.print("\nType: " + this.type);
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System.out.print("\nCapacity: " + this.capacity + "-seater\n\n");
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return;
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}
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}
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/*
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|---------------------------------------------------|
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||| https://codeforces.com/profile/codechaser |||
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||| https://www.codechef.com/users/codechaser |||
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||| https://github.com/code-chaser |||
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|---------------------------------------------------|
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*/

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