Java Programming
In the Java Programming internship program, you will build a solid foundation in core Java through practical coding tasks and real-world mini projects. From basic syntax and object oriented programming to file handling, GUI development with Swing, and working with REST APIs, this program will help you gain hands-on experience with one of the most in-demand programming languages used across enterprise systems and applications.
Level 1: Easy Projects
Task 1: Java Development Environment Setup and Hello World
Problem Statement:
Set up Java development environment and write a simple “Hello, World!” program.
Steps to Complete:
- Install JDK and an IDE (e.g., Eclipse, IntelliJ IDEA)
- Configure environment variables if needed
- Write and run a Java program that prints “Hello,World!”
- Compile and run the program from command line and IDE
Task 2: Basic Calculator Program
Problem Statement: Create a simple calculator that performs addition, subtraction, multiplication,
and division.
Steps to Complete:
- Take user input for two numbers and an operator
- Perform the calculation based on the operator
- Display the result
- Handle division by zero and invalid inputs
Task 3: Arrays and Loops Practice
Problem Statement:
Write a program that takes an array of integers and finds the maximum and
minimum values.
Steps to Complete:
- Define an array of integers
- Loop through the array to find max and min values
- Print the maximum and minimum values
Level 2: Intermediate Projects
Task 4: File Handling – Read and Write Text Files
Problem Statement:
Create a program that reads text from one file and writes it to another file in
uppercase.
Steps to Complete:
- Open a text file and read its contents using FileReader and BufferedReader
- Convert the text to uppercase
- Write the uppercase text to a new file using FileWriter and BufferedWriter
- Handle file exceptions
Task 5: Simple Contact Management System
Problem Statement:
Build a program to add, view, and search contacts using ArrayList and custom Contact class.
Steps to Complete:
- Create a Contact class with name and phone number fields
- Use ArrayList to store Contact objects
- Implement functions to add a contact, view all contacts, and search by name
- Display search results
Task 6: Basic Banking System
Problem Statement:
Simulate simple banking operations like deposit, withdrawal, and balance inquiry.
Steps to Complete:
- Create a BankAccount class with balance and methods for deposit and withdrawal
- Ensure withdrawal does not allow negative balance
- Implement a simple menu-driven interface for user interaction
- Display current balance after each transaction
Level 3: Advanced Projects
Task 7: Student Management System with File Persistence
Problem Statement:
Create a student management system that stores student records in a file.
Steps to Complete:
- Create a Student class with fields like name, ID, and grade
- Implement adding, viewing, and searching student records
- Save student data to a file and read from it on program start
- Use serialization or file I/O for persistence
Task 8: Simple GUI Calculator using Swing
Problem Statement:
Develop a basic calculator with a graphical user interface using Java Swing.
Steps to Complete:
- Create GUI with buttons for digits and operations
- Display input and result in a text field
- Handle button clicks and perform calculations
- Implement error handling for invalid inputs
Task 9: REST API Client Using HttpURLConnection
Problem Statement:
Write a Java program that fetches data from a public REST API and displays it.
Steps to Complete:
- Use HttpURLConnection to send GET requests
- Connect to a public API (e.g., JSONPlaceholder)
- Parse the JSON response using a library like org.json or Gson
- Display selected data in the console