Eclipse is an open source and Java based extensible development platform. In itself, it is just a framework and a set of services for building a development environment through plug-in components. Fortunately, eclipse comes with a standard set of plug-ins, including the java development kit (JDK).
How to view the eclipse version number
1. Find the eclipse installation directory
2. Enter the readme folder and open readme_ eclipse.html
3. readme_ The second line of eclipse.html is the digital version number, such as:
Eclipse Project Release Notes
Last revised June 8th, 2012
Attachment: introduction to each version of eclipse（http://zh.wikipedia.org/wiki/Eclipse）
Since 2006, the eclipse foundation has arranged every yearSynchronous Publishing（simultaneous release）。 The synchronous release is mainly carried out in June, and Sr1 and Sr2 versions will be released in September and February.
|Code||Platform version||project||Major release date||Sr1 issue date||Sr2 issue date|
|—||3.0 ||—||June 21, 2004||—||—|
|—||3.1||—||June 28, 2005||—||—|
|Callisto||3.2||Callisto projects||June 30, 2006||—||—|
|Europa||3.3||Europa projects||June 29, 2007||September 28, 2007||February 29, 2008|
|Ganymede||3.4||Ganymede projects||June 25, 2008||September 24, 2008||February 25, 2009|
|Galileo||3.5||Galileo projects||June 24, 2009||September 25, 2009||February 26, 2010|
|Helios||3.6||Helios projects||June 23, 2010||September 24, 2010||February 25, 2011|
|Indigo||3.7||Indigo projects||June 22, 2011||September 23, 2011||February 24, 2012|
|Juno||4.2 ||Juno projects||June 27, 2012||September 28, 2012||February 22, 2013|
|Kepler||4.3||Kepler projects||June 26, 2013||September 28, 2013||February 28, 2014|
|Luna||4.4||Luna projects||June 25, 2014||September 23, 2014||February 25, 2015|
|Mars||4.5||Mars projects||June 24, 2015||September 22, 2015||February 24, 2016|
|Neon||4.6||Neon projects||June 22, 2016|
|Oxygen||4.7||Oxygen projects||June 28, 2017|
|Photon||4.8||Photon projects||June 2018|
Eclipse version selection criteria
Open eclipse download address（http://www.eclipse.org/downloads/）, you can see that there are many versions of eclipse available for download. Beginners are often confused and don’t know which version to download.
The first five versions are often used:
Eclipse IDE for Java EE developers: a version developed for J2EE;
Eclipse classic: it is a classic version of eclipse. No plug-ins are installed. It is a pure version. You can install any plug-ins you need. It is recommended for java beginners to use this version;
Eclipse IDE for Java developers: applicable to Java development;
Eclipse IDE for C / C + + developers: applicable to C / C + + development;
Eclipse for mobile developers: for Java mobile phone development
Eclipse for RCP / plug in developers: for RCP and plug-in development
So what’s the difference between them? The biggest difference is the size of the title and decompression package. After downloading and decompressing, you will find that the files in the plugins / features directory are different between different versions of eclipse.
For a standard eclipse, add some plugins needed for Jee development, such as WTP, WST, etc. it has changed into “eclipse IDE for Java EE”. The same is true for others. As a skilled eclipse user, you can choose whichever one, and the required plugins can be easily obtained from the Eclipse Official Website.