Added Quiz applictaion in java

Author: SOSWAL007

Domains/CompetitiveProgramming/Programs/Java/QuizGame/QuizApplication.java

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+import java.util.Scanner;
+
+class Question {
+    String question;
+    String[] options;
+    char correctAnswer;
+
+    Question(String question, String[] options, char correctAnswer) {
+        this.question = question;
+        this.options = options;
+        this.correctAnswer = correctAnswer;
+    }
+
+    boolean checkAnswer(char answer) {
+        return Character.toUpperCase(answer) == Character.toUpperCase(correctAnswer);
+    }
+}
+
+public class QuizApplication {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        int score = 0;
+
+        Question[] questions = {
+            new Question("1. Which company developed Java?", 
+                new String[]{"A. Sun Microsystems", "B. Microsoft", "C. Apple", "D. IBM"}, 'A'),
+            new Question("2. Which of the following is not a Java feature?", 
+                new String[]{"A. Object-Oriented", "B. Portable", "C. Use of pointers", "D. Secure"}, 'C'),
+            new Question("3. Which keyword is used to inherit a class in Java?", 
+                new String[]{"A. super", "B. this", "C. extends", "D. implement"}, 'C'),
+            new Question("4. What is the size of int in Java?", 
+                new String[]{"A. 2 bytes", "B. 4 bytes", "C. 8 bytes", "D. Depends on OS"}, 'B'),
+            new Question("5. Which method is the entry point for a Java program?", 
+                new String[]{"A. start()", "B. main()", "C. run()", "D. execute()"}, 'B')
+        };
+
+        System.out.println("===== WELCOME TO JAVA QUIZ =====");
+        for (Question q : questions) {
+            System.out.println("\n" + q.question);
+            for (String opt : q.options) {
+                System.out.println(opt);
+            }
+            System.out.print("Enter your answer (A/B/C/D): ");
+            char ans = sc.next().charAt(0);
+
+            if (q.checkAnswer(ans)) {
+                System.out.println("✅ Correct!");
+                score++;
+            } else {
+                System.out.println("❌ Wrong! Correct Answer: " + q.correctAnswer);
+            }
+        }
+
+        System.out.println("\n===== QUIZ FINISHED =====");
+        System.out.println("Your Score: " + score + "/" + questions.length);
+        sc.close();
+    }
+}

Domains/CompetitiveProgramming/Programs/Java/QuizGame/README.md

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+**Contributor**
+# Java Quiz Application
+
+A simple **Java console-based quiz application** that allows users to answer multiple-choice questions and calculates their score at the end. The program demonstrates **object-oriented programming**, **arrays**, and **user input handling** in Java.
+
+---
+
+### Project Overview
+
+This application presents a set of multiple-choice questions (MCQs) to the user.  
+- Users select an answer by entering the corresponding option (A/B/C/D).  
+- The program checks the answer and provides instant feedback (Correct/Wrong).  
+- At the end, it displays the total score.  
+
+The application uses a `Question` class to store the question text, options, and the correct answer.
+
+---
+
+### Features
+
+- Multiple-choice questions with 4 options each  
+- Instant feedback after each answer  
+- Total score calculation at the end  
+- Case-insensitive answer checking  
+- Easy to add or modify questions  
+
+---
+
+### Working Principle
+
+1. Create an array of `Question` objects, each containing the question, options, and correct answer.  
+2. Loop through each question:  
+   - Display the question and its options.  
+   - Accept the user's answer from the console.  
+   - Check if the answer is correct using the `checkAnswer` method.  
+   - Display feedback (Correct/Wrong).  
+3. After all questions, display the total score.  
+
+---
+