Java is a versatile programming language, and there are plenty of beginner-friendly projects you can undertake to improve your skills. Here are some Java project ideas for beginners:

1. Hello World: Start with the classic “Hello, World!” program. It’s a simple console application that prints a message to the screen. This is a great way to get familiar with the basic syntax of Java.

2. Calculator: Create a simple command-line calculator that can perform basic arithmetic operations like addition, subtraction, multiplication, and division.

3. To-Do List: Build a to-do list application that allows users to add, remove, and view tasks. You can implement this as a console application or create a basic graphical user interface (GUI).

4. Guess the Number: Develop a game where the computer generates a random number, and the player tries to guess it. Provide feedback on whether the guess is too high or too low.

5. Basic Web Scraper: Create a program that can scrape data from a website and extract information such as headlines or weather forecasts. You can use libraries like Jsoup to help with web scraping.

6. Simple Chat Application: Build a basic chat application that allows two users to exchange messages over a network. You can use Java’s networking libraries for this project.

7. File Explorer: Create a simple file explorer application that allows users to navigate through directories, view files, and perform basic file operations like copy, move, and delete.

8. Inventory Management System: Build a console-based inventory management system for tracking products, their quantities, and prices. Implement features like adding, updating, and deleting products.

9. Library Management System: Create a program to manage a library’s book inventory. Users should be able to check out and return books, view available books, and search for books by title or author.

10. Weather App: Develop an application that fetches weather data for a given location from a weather API (e.g., OpenWeatherMap) and displays it to the user.

11. Note-Taking App: Build a simple note-taking application with a GUI. Allow users to create, edit, and delete notes, and save them to a file for future use.

12. Expense Tracker: Create an expense tracker application that allows users to record their daily expenses and view summaries of their spending over time.

13. Tic-Tac-Toe Game: Implement a console-based or GUI-based Tic-Tac-Toe game that two players can play against each other.

14. Student Record System: Build a program for managing student records. Users should be able to add, view, and update student information, such as names, grades, and courses.

15. Currency Converter: Develop a currency converter application that can convert between different currencies using real-time exchange rates from an API.

These projects cover a range of difficulty levels, and you can choose one that aligns with your current skill level and interests. As you work on these projects, you’ll gain valuable experience and gradually become more proficient in Java programming.