How can I run Eclipse on the iPad

Development environment: Eclipse 2020-12 with numerous extensions

The open source desktop IDE Eclipse was released in version 2020-12. It is available in 14 expandable IDE packages for different purposes and programming languages. A Java installation is not a mandatory requirement, at least not when using the Eclipse installer or when installing one of the popular IDE packages for Java, for Enterprise Java, for C / C ++, for Web and JavaScript, as well as for Rust. The new "Eclipse IDE for Embedded C / C ++ Developers" for writing C / C ++ code especially for ARM and RISC-V processors also contains the Java runtime environment required for execution.

The 14 IDE packages are available for Windows, Linux and macOS. In Linux, Eclipse now supports 64-bit ARM processors in addition to x86. This means that the IDE can be run natively on a Raspberry Pi 3 or 4, for example, without a slowing x86 emulator. The new Eclipse version contains adjustments and corrections for macOS 11 alias Big Sur. Apple's own new ARM processor M1 is not yet supported natively.

Java 15 built in

Support for Java 15, which had to be installed in the previous Eclipse version, is now built in. Code coverage, for recording test coverage, now works with Java 15. Text blocks and multi-line strings that were a preview feature in Java 14 are now final and can be used productively. The two preview features "Pattern Matching for instanceof" and "Records" remained the same or syntactically unchanged compared to Java 14. Only the "Sealed Classes" are new. They only allow certain classes to inherit from them, which can be useful with interfaces. In Eclipse, text blocks can be created using keyboard shortcuts and records can be created using a dialog. If a class that extends a sealed class is missing "sealed", "non-sealed" or "final", this can be corrected using a quick fix (Ctrl + 1).

Clean up Java code

Code completion behaves differently in two ways. On the one hand, existing items are overwritten by default. To prevent this, the Ctrl key must be pressed instead of the other way around. On the other hand, the IDE inserts the most suitable one as a parameter instead of the parameter name. In Eclipse 2020-12 there are 27 new functions for cleaning up Java source code, all of which come from the AutoRefactor plug-in. Clean-up functions can be applied manually to projects, packages or files or executed automatically as save actions when a file is saved. The new functions delete unnecessary or duplicated code, use new language features, adhere to a predefined style or optimize the code in terms of speed and memory consumption.

In the look of the operating system

A new user interface called "System" has been added to the existing light and dark modes. The system theme takes over the colors and appearance from the operating system. It can be activated in the settings in General | Appearance. The Eclipse team has also revised the light mode in macOS: toolbars, status bar and backgrounds now shine in white instead of gray.

RIP - Farewell to Dani

During the development of the Eclipse 2020-12 release, Daniel Megert, Eclipse developer from the very beginning, died unexpectedly. Even before Eclipse became open source in 2001, he was part of the original team at Object Technology International in Zurich, Switzerland. Daniel Megert most recently headed the Eclipse Platform and Java Development Tools (JDT) projects.

Upgrade or download

More details and the respective innovations of the Eclipse projects involved in the edition can be found on the website for the 2020-12 release. The new Eclipse IDE packages can be installed via the Eclipse Installer or downloaded as a ZIP file. The update of an existing Eclipse IDE can be done via Help | Initiate Check for Updates (in the case of slightly older versions, the "Latest Eclipse Release" update site must be activated).

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