⏱️ Time: 2 Hours
📊 Maximum Marks: 50

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📌 Instructions (Read Carefully):

• Attempt all questions.
• Write each program in a separate class/file.
• Follow proper OOP principles and structure.
• Use Scanner class for input wherever required.
• Output must be clearly labeled and formatted.
• Add comments explaining important logic and decisions.

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🔹 Section A – Core Programming (30 Marks)

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Q1. Class, Constructor & Multi-Condition Logic (10 Marks)

📘 Scenario: Movie Ticket Billing System

A cinema calculates ticket price based on show type and number of tickets.

👉 Write a Java program with the following requirements:

1. Create a class MovieTicket.
2. Declare instance variables:
   • movieName (String)
   • showType (String) (“Morning” or “Evening”)
   • numberOfTickets (int)
   • pricePerTicket (double)
3. Create a parameterized constructor:
   • Initialize all variables using this
4. Create a method calculateTotal():
   • Base total = numberOfTickets × pricePerTicket
   • If showType = “Evening” → add 20% extra charge
   • If numberOfTickets ≥ 5 → give 10% discount on final amount
5. Create method displayDetails():
   • Display all details including final amount
6. In the main() method:
   • Take input from user
   • Create object
   • Display result

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Q2. Inheritance + Overriding + Combined Logic (10 Marks)

📘 Scenario: Courier Service Pricing

A courier company charges based on package type and weight.

👉 Write a Java program as follows:

1. Create base class Courier:
   • Method calculateCost(double weight)
   • Default message: Cost calculation not available
2. Create subclasses:
   • DocumentCourier
   • ParcelCourier
3. Override method:
   • DocumentCourier:
     • ₹5 per kg
     • Minimum charge ₹50 (if calculated < 50, charge 50)
   • ParcelCourier:
     • ₹10 per kg
     • If weight > 10 kg → add ₹100 extra
4. In the main() method:
   • Take weight as input
   • Create objects
   • Display calculated cost
5. Output must show:
   • Courier type
   • Weight
   • Final cost

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Q3. Encapsulation + Transaction Rules (10 Marks)

📘 Scenario: Digital Wallet with Limits

A wallet system enforces transaction limits and balance rules.

👉 Write a Java program with the following requirements:

1. Create class DigitalWallet.
2. Declare private variables:
   • walletId (int)
   • userName (String)
   • balance (double)
3. Provide getter and setter methods:
   • Balance must not be negative
4. Create methods:
   • addFunds(double amount)
   • makePayment(double amount)
5. Add conditions:
   • Maximum payment allowed per transaction = ₹5000
   • Balance must remain ≥ ₹200 after payment
   • Otherwise display: Transaction declined
6. In the main() method:
   • Perform multiple operations
   • Display final balance

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🔹 Section B – Advanced OOP Concepts (20 Marks)

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Q4. Abstract Class + Multi-Step Processing (10 Marks)

📘 Scenario: Billing System for Utilities

Different utilities calculate bills differently but share common display logic.

👉 Write a Java program as follows:

1. Create an abstract classUtilityBill:
   • Abstract method calculateBill(int usage)
   • Concrete method displayMessage() → prints "Bill Generated Successfully"
2. Create subclasses:
   • WaterBill
   • InternetBill
3. Implement method:
   • WaterBill:
     • ₹2 per unit
     • If usage > 100 → add ₹50 extra
   • InternetBill:
     • ₹500 fixed
     • If usage > 500 → add ₹100 extra
4. In the main() method:
   • Take usage input
   • Call both methods
5. Output must show:
   • Type of bill
   • Usage
   • Total amount

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Q5. Runtime Polymorphism + Multiple Conditions (10 Marks)

📘 Scenario: Insurance Premium System

Different policies calculate premium differently.

👉 Write a Java program:

1. Create class Insurance:
   • Method calculatePremium(double amount)
   • Default: return 0
2. Create subclasses:
   • HealthInsurance
   • VehicleInsurance
3. Override method:
   • HealthInsurance:
     • Premium = 5% of amount
     • If amount > 5,00,000 → add ₹2000 extra
   • VehicleInsurance:
     • Premium = 3% of amount
     • Minimum premium ₹1000
4. In the main() method:
   • Take amount as input
   • Use parent reference
   • Display premium
5. Output must clearly show:
   • Insurance type
   • Amount
   • Premium

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⭐ Bonus Question (Optional – 5 Marks)

Q6. Exception Handling + Custom Logic

📘 Scenario: Login Attempt Limiter

👉 Write a Java program to:

1. Allow user to enter password
2. Conditions:
   • Correct password = "admin123"
   • Maximum 3 attempts allowed
3. If:
   • Wrong password → display "Incorrect password"
   • After 3 attempts → throw exception "Account Locked"
4. Use:
   • Loop + try-catch
5. Finally block should print: