---

✅ Assignment 1: Simple Calculator

Level: Beginner
Task:
Write a Java program using switch-case to perform:

• Addition
• Subtraction
• Multiplication
• Division

Take two numbers as input.

---

✅ Assignment 2: Student Grade System

Level: Beginner
Task:
Write a Java program to:

• Take marks of 5 subjects
• Calculate total, percentage
• Display grade based on percentage
  • 90+ → A
  • 75–89 → B
  • 60–74 → C
  • 40–59 → D
  • < 40 → Fail

---

✅ Assignment 3: Bank Account (OOP Concept)

Level: Beginner–Intermediate
Task:
Create a class BankAccount with:

• Account number
• Holder name
• Balance

Methods:

• deposit()
• withdraw()
• checkBalance()

Write a menu-driven main program to test all features.

---

✅ Assignment 4: Student Management Using ArrayList

Level: Intermediate
Task:
Create a Student class with:

• name
• rollNo
• marks

Use ArrayList to:

• Add student
• Display students
• Search student by roll number
• Remove a student

Use loops + ArrayList methods.

---

✅ Assignment 5: File Handling – Contact Book

Level: Intermediate
Task:
Create a program that stores contact details using Java File I/O:
Fields:

• Name
• Phone
• Email

Menu options:

1. Add contact
2. Show all contacts
3. Search contact
4. Delete contact
5. Exit

Store all data in a text file.