Jun 3, 2025 · "Objects First with Java: A Practical Introduction Using BlueJ" is a textbook co-written by the developers of BlueJ and has sold hundreds of thousands of copies worldwide.

Jun 3, 2025 · BlueJ 4 adds support for the Git version control system (and retains support for Subversion). Note: BlueJ 4 requires Java 8 (minimum 8u60) and JavaFX, and thus is currently …

For BlueJ 4.2.0 and later, OpenJDK 11 and OpenJFX 11 are required, which are only available for 64-bit operating systems. You can download the OpenJDK from the official site, which is a zip which you …

BlueJ is a port of Blue to Java, and was first released in 1999. Thanks to generous support from Sun Microsystems (and more recently Oracle), BlueJ development and support has continued since then.

When you use BlueJ, some anonymous non-personal information (BlueJ version, Java version, Operating System, interface language, etc) is sent to the BlueJ maintainers, to help with …

The BlueJ system and this tutorial are available 'as is', free of charge to anyone for use and non-commercial re-distribution. Disassembly of the system is prohibited.

You can email us to request technical support for BlueJ, which is when BlueJ itself is malfunctioning. For programming problems, please use an appropriate forum (such as this one at Coderanch) instead.

BlueJ 5.2.1 has been released and is available for download on the main page. This is a relatively minor release, with fixes for Linux and generic installers, plus fixes for JavaFX in non-English locales.

A Practical Introduction using BlueJ Chapter sequence Chapter 1 Objects and Classes Chapter 2 Understanding Class Definitions Chapter 3 Object Interaction Chapter 4 Grouping Objects Chapter 5 …

Three menu items in the BlueJ help menu display the BlueJ tutorial, the BlueJ reference manual and the Java standard class libraries. Invoking these functions opens a web browser which, by default, …