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Example: As a family car, it’s equipped with extra seats and space for luggage, making it
                    suitable for personal trips. When used as a taxi, it features a fare meter and a taxi sign for
                    transporting passengers. As a pool car for students, it includes extra safety seats and a schedule
                    to manage shared transportation. Despite these different uses, the car remains fundamentally
                    the same, demonstrating how one object can fulfil multiple roles.

                    INTRODUCING BLUEJ

                 Earlier, we used basic text editors like Notepad to write Java programs.
                 However,  with  technological  advancements,  there  are  now  several free
                 Integrated Development Environments (IDEs) available, such as NetBeans,
                 Eclipse, and BlueJ.
                 BlueJ is an IDE specifically designed for beginners.  It provides a simple
                 and intuitive interface for learning object-oriented programming concepts. It includes a built-
                 in editor for writing code, a debugger to help find and fix errors, and a viewer to display your
                 program’s output. BlueJ also has a user-friendly interface that makes it easier to manage and run
                 Java programs.

                 You can download BlueJ for free from https://www.bluej.org/. After downloading, follow the
                 installation instructions to set it up on your computer. BlueJ’s simplicity and integrated tools
                 make it an excellent choice for learning and developing Java programs.
                    INTERFACE OF BLUEJ

                 After installing the BlueJ IDE, double-click on the BlueJ application shortcut icon on the Desktop.
                 The BlueJ application window appears.

                                                            Menu Bar
                          Title Bar

                         New Class
                           Button
                          Compile
                           Button

                        Project Icon




















                                        Object Bench




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