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Java Challenges

This repository contains Java practice tasks grouped by topic (operators, methods, switch, loops, exceptions).

What Is In This Project

  • Small standalone Java exercises.
  • One entry file App.java for a basic test run.
  • Topic folders with task files that can be run independently.

Requirements

  • JDK 17+ (JDK 25 LTS is also supported)
  • VS Code with Java Extension Pack (recommended)

Project Structure

Java_Challenges/
|- src/
|  |- App.java
|  |- challenges_1_operators/
|  |- challenges_2_methods/
|  |- challenges_3_switch/
|  |- challenges_5_exceptions/
|  |- challenges_6_Classes/
|  |- challenges_...
|- bin/              (compiled classes)
|- lib/              (external libraries, if any)
|- .vscode/
|- .gitignore
`- README.md

How To Run (VS Code)

  1. Clone or download this repository.
  2. Open the folder in VS Code.
  3. Install Java extensions if prompted.
  4. Open any class with a main method.
  5. Click Run above the main method.

How To Run (Terminal)

From the project root:

Run the sample app:

javac -d bin src/App.java
java -cp bin App

Run a specific challenge file (example):

javac -d bin src/challenges_3_switch/PhoneticAlphabet.java
java -cp bin challenge.task_3_switch.PhoneticAlphabet

Replace the file and class name with the task you want to run.

Notes

  • Most files are independent exercises for learning and practice.
  • bin/ stores compiled .class files.