Java-Project-Paint-App

Paint Applet

Overview

The Paint Applet is a simple drawing application built using Java Swing. It allows users to draw shapes on a canvas by clicking and dragging the mouse, and it includes buttons to change the drawing color. The applet maintains a list of drawn shapes and displays them on the screen.

Features

• Draw shapes by clicking and dragging the mouse.
• Change drawing color using buttons.
• Maintains a history of drawn shapes and displays them.

Installation

1. Ensure you have Java Development Kit (JDK) installed.
2. Clone or download the project files to your local machine.

Usage

1. Navigate to the project directory.
2. Compile the project using the following command:

   javac PaintApplet.java
   

3. Run the project with the command:

   java PaintApplet
   

Code Structure

• PaintApplet class extends JPanel and serves as the main panel for drawing.
• Shape class is a nested class within PaintApplet, representing individual shapes drawn on the canvas.

Components

• Mouse Listeners:

  • MouseAdapter for capturing mouse press and release events.
  • MouseMotionAdapter for capturing mouse drag events.

• Color Buttons:

  • Three buttons to change the current drawing color to black, red, or blue.

• Shape Class:

  • Manages the points and color of a shape.
  • Methods to add points, retrieve point arrays, and get the number of points.

How It Works

1. When the user presses the mouse button, a new Shape object is created, and the first point is added.
2. As the user drags the mouse, points are continuously added to the current shape.
3. When the user releases the mouse button, the shape is finalized and added to the list of shapes.
4. The paintComponent method iterates through the list of shapes and draws each one on the canvas.

Customization

• Adding More Colors:

  • Create new JButton instances for each color.
  • Add an ActionListener to each button to call setCurrentColor with the desired Color.

• Changing Canvas Size:

  • Modify the frame.setSize method in the main method to set the desired width and height.

License

This project is licensed under the MIT License.

Acknowledgments

This project was developed as a part of a Java coursework during my 2nd year of B.Tech.

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