Create Class BlueJ Project

A class in BlueJ is a blueprint for objects. You can create one by right-clicking in the project window and selecting New Class. In Java, everything is associated with classes and objects. A class defines the data and behavior of an object, including its attributes (also known as fields) and methods. Attributes represent the state of the object, while methods define its behavior. These can include actions that the object can perform and calculations and operations that the object can carry out.

Create a New Class

Creating a new class in the BlueJ IDE involves the following simple steps:

• Open BlueJ IDE

Start the BlueJ IDE from the Start menu or the desktop shortcut icon.

• Create a New Project.
• Add a New Class.

Click on the New Class button, or you can choose the Edit >> New Class… menu option.

or

In the project window, right-click anywhere in the blank area. From the context menu, select the New Class… option.

A dialog box will appear, prompting you to enter a class name (e.g., MyClass).

Enter a name for your class and click OK. Choose the Class Type: as Class.

 

The project window will display a class icon with the name you provided. The icon represents your new class.

Open the Class to Edit and add the code.

Double-click on the class icon to open the code editor. BlueJ will generate a basic template for your new class.

 

You can now edit the class and add code. Add fields, methods, and constructors
implementation to the class.

Once you have finished editing, you can compile and run your class within BlueJ.

Next Tutorial

• Compile Java Class in BlueJ

BlueJ Tutorials

BlueJ IDE tutorials on this website:

• https://www.testingdocs.com/bluej-ide-guide-for-students/

For more information on BlueJ IDE, visit the official website:

• https://bluej.org/