Small Java project ideas that stick strictly to loops, if-else, methods, and arrays

 Here are some small Java project ideas that stick strictly to loops, if-else, methods, and arrays, without using OOP or collections like ArrayList, HashMap, etc.:

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1. Student Marks Calculator

Features:

Input marks for 5 subjects using an array.

Calculate total, average, and grade using if-else.

Concepts: Arrays, methods, if-else, for loop.

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2. Simple ATM Simulation

Features:

Balance check, withdraw, deposit.

Use if-else for logic and a loop for repeated menu display.

Concepts: Methods, loops, if-else.

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3. Number Guessing Game

Features:

Random number (use Math.random()).

User tries to guess it with hints (higher/lower).

Concepts: Loops, if-else, methods.

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4. Prime Numbers in Range

Features:

Input a range and print all prime numbers in it.

Concepts: Loops, if-else, methods.

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5. Simple Calculator

Features:

Menu for add, subtract, multiply, divide.

Call a separate method for each operation.

Concepts: Methods, if-else.

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6. Array Sorting (Bubble Sort)

Features:

Input array elements.

Sort using bubble sort (no Arrays.sort()).

Concepts: Arrays, nested loops, methods.

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7. Frequency Counter in Array

Features:

Count how many times each element appears.

Avoid using collections.

Concepts: Arrays, nested loops, if-else.

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8. Tic Tac Toe Game (2-player)

Features:

3x3 grid using 2D array.

Players take turns.

Concepts: Arrays, loops, if-else.