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Home » Newcomers » Newcomers » Eclipse 2018-12 cannot install Tomcat plugin(How to install Tomcat plugin into Eclipse 2018-12)
Eclipse 2018-12 cannot install Tomcat plugin [message #1800672] Fri, 04 January 2019 21:34 Go to next message
James Huang is currently offline James HuangFriend
Messages: 2
Registered: January 2019
Junior Member
Currently it is January 2019. From the Eclipse web site people can download the latest Eclipse IDE, known as 2018-12. In our case, we downloaded for Windows 64-bit. The installation for Java development is fine, for Java 11. However, one cannot install Tomcat plugin. Here are the steps to reproduce.
Open IDE, meaning Eclipse 2018-12.
Go to Help / Eclipse Marketplace ..
Search for Tomcat Plugin.
Install any plugin tool and it will fail.

Example 1: Install Uqbar Tomcat XT Eclipse Plug-in 2.0.0, it failed because of authentication error. One can install anyway and go to Window / Preferences, click Tomcat, error happened.

Example 2: Install Eclipse Tomcat Plugin 9.1.3, and error came out right away.

This did not happen in Eclipse Photon (released in June 2018).

So the question is how to install Tomcat plugin into Eclipse 2018-12. By the way, we manually downloaded Eclipse Tomcat Plugin 9.1.3. Then the question is how to manually install it into Eclipse? We tried but with no luck.
Re: Eclipse 2018-12 cannot install Tomcat plugin [message #1800683 is a reply to message #1800672] Sat, 05 January 2019 08:36 Go to previous messageGo to next message
Ed Merks is currently offline Ed MerksFriend
Messages: 30450
Registered: July 2009
Senior Member
If I recall correctly, market place client has problems running on Java 11 because some javax packages have been removed from Java 11. So I think the only workaround is to make sure you have a Java 8, 9, or 10 installed, and to use that to run the IDE, e.g. , add/modify the following lines in the eclipse.ini:
-vm
C:/Program Files/Java/jdk1.8.0_121/bin
Make sure these are before the -vm args section and that they are on two separate lines as illustrated. Within that IDE you can still use Java 11 as your JRE via Window -> Preferences -> Java -> Installed JREs.
Re: Eclipse 2018-12 cannot install Tomcat plugin [message #1801050 is a reply to message #1800683] Fri, 11 January 2019 16:47 Go to previous messageGo to next message
James Huang is currently offline James HuangFriend
Messages: 2
Registered: January 2019
Junior Member
Thanks. Actually the problem is not regarding how to configure Java 11 and create a JAVA project in the IDE. That works fine. We can create JAVA project using Java 11 and run smoothly.
The problem is not able to install Tomcat plugin, either manually or through Eclipse Marketplace. Without such plugin, this IDE cannot be used to create Tomcat project.

The solution is NOT to download and install this "pure" Windows 64-bit release (known as 2018-12). Instead, download eclipse-jee-2018-12-R-win32-x86_64.zip (known as 2018-12-R) and install. Then manually install Tomcat plugin. This worked.
Conclusion:
Eclipse Marketplace does not work because of Java 11. But to install a plugin manually, The 2018-12 release does not work, but 2018-12-R works. In other words, to use Java 11 and Tomcat, currently downloading and installing which Eclipse has a difference.
Re: Eclipse 2018-12 cannot install Tomcat plugin [message #1803288 is a reply to message #1800672] Tue, 26 February 2019 10:38 Go to previous message
Harry Whitehead is currently offline Harry WhiteheadFriend
Messages: 1
Registered: February 2019
Junior Member
The Eclipse Tomcat Plugin provides simple integration of a tomcat servlet container for the development of java web applications. This project is the successor of the original Sysdeo Tomcat Plugin. Bug reports should go to our project on GitHub myprepaidcenter

[Updated on: Wed, 27 February 2019 08:29]

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