Java Projects for Beginners with Solutions and Explanation

Java Beginners Projects

You may read our Java tutorial and practice Java exercises before solving the following projects

1.
Simple Calculator : Perform basic arithmetic operations like addition, subtraction, multiplication, and division.

Input: 5, 3, +

Output: 8

Solutions

2.
Currency Converter : Convert between different currencies based on user input.

Input: 100 USD to EUR

Output: 92.50 EUR (depends on current exchange rate)

Solutions

3.
Unit Converter : Convert between various units (e.g., length, temperature, weight).

Input: Value, unit type (e.g., length, weight), and unit to convert to.

Output: Converted value in the target unit.

Solutions

4.
Number Guessing Game : User guesses a randomly generated number within a range.

Input: User's guess of a number within a range (e.g., 1-100).

Output: Indication of whether the guess is too high, too low, or correct.

Solutions

5.
Tic-Tac-Toe Game : Create a simple two-player console-based game.

Input: Player move (row and column) on a 3x3 grid.

Output: Updated game board and game status (win/draw/continue).

Solutions

6.
Palindrome Checker : Check whether a given word or phrase is a palindrome.

Input: A word or phrase.

Output: Whether the input is a palindrome or not.

Solutions

7.
BMI Calculator : Calculate Body Mass Index based on user input for weight and height.

Input: Weight (kg) and height (m).

Output: BMI value and corresponding category (e.g., underweight, normal, overweight).

Solutions

8.
Prime Number Checker : Determine whether a given number is prime or not.

Input: A number.

Output: Whether the number is prime or not.

Solutions

9.
Factorial Calculator : Calculate the factorial of a number using loops or recursion.

Input: A number.

Output: Factorial of the number.

Solutions

10.
Fibonacci Sequence Generator : Generate the first N numbers of the Fibonacci sequence.

Input: Number of terms.

Output: First N numbers in the Fibonacci sequence.

Solutions

11.
Armstrong Number Checker : Check if a number is an Armstrong number.

Input: A number.

Output: Whether the number is an Armstrong number or not.

Solutions

12.
Vowel Counter : Count the number of vowels in a given string.

Input: A string.

Output: Number of vowels in the string.

Solutions

13.
Password Validator : Check if a password meets certain security criteria (e.g., length, special characters).

Input: A password string.

Output: Whether the password is valid based on criteria (e.g., length, special characters).

Solutions

14.
Basic Banking System : Create simple banking features like deposit, withdrawal, and balance check.

Input: User commands to deposit, withdraw, or check balance.

Output: Updated balance after transactions.

Solutions

15.
Student Grade System : Calculate and store student grades for various subjects.

Input: Student name and grades for multiple subjects.

Output: Student's average grade and status (pass/fail).

Solutions

16.
Simple Voting System:

Input: Candidate name or number to vote for.

Output: Confirmation of the vote and updated vote count for each candidate.

Solutions

17.
Leap Year Checker:

Input: A year.

Output: Whether the year is a leap year or not.

Solutions

18.
Simple Alarm Clock:

Input: Set the alarm time and optional message.

Output: Alarm triggered at the set time with a notification.

Solutions

19.
Rock, Paper, Scissors Game:

Input: User's choice: rock, paper, or scissors.

Output: Result of the game (win, lose, or draw).

Solutions

20.
Odd-Even Sorter:

Input: A list of numbers.

Output: Two lists: one with odd numbers, one with even numbers.

Solutions

21.
Palindrome Number:

Input: A number.

Output: Whether the number is a palindrome or not.

Solutions

22.
Simple Stopwatch:

Input: Start and stop commands.

Output: Elapsed time when the stopwatch is stopped.

Solutions

23.
Sum of Digits:

Input: A number.

Output: Sum of the digits of the number.

Solutions

24.
Reverse a String:

Input: A string.

Output: The reversed string.

Solutions

25.
Find the Largest Number:

Input: An array or list of numbers.

Output: The largest number in the list.

Solutions

Java Code Editor:

More to Come !