Upgrading to Eclipse 4.3 Kepler

Another relatively smooth upgrade.

I downloaded the Eclipse IDE for Java Developers (rather than Standard) since I don't do any plugin development.

See Top 10 Eclipse Kepler Features

I did have one problem on Mac OS X - when you try to run Eclipse you get an error that it is "damaged and can't be opened". I'd run into this before. It's a known issue which, for some reason, the Eclipse developers have closed as "RESOLVED NOT_ECLIPSE" i.e. not their problem. However, as one of the commenters points out, other apps don't have this problem, so it's obviously something Eclipse is doing different if not technically "wrong". It's relatively easy to work around by doing:

xattr -d com.apple.quarantine Eclipse.app/

I imported my plug-ins from my previous Eclipse 4.2 Juno and they all came across without any problems. Even Mercurial still seems to be functional. Here's the list of plug-ins I'm currently using:

• Bytecode Outline
• EclEmma Java Code Coverage
• Checkstyle
• FindBugs
• Infinitest
• MercurialEclipse
• Metrics plugin for Eclipse

The other problem I ran into is also a known issue - conflicts (giving SecurityException) between the hamcrest-core in the Eclipse copy of JUnit, and hamcrest-library that I'm adding for additional matchers. At first I thought it was because the new version of Eclipse came with a newer version of JUnit, so I upgraded my hamcrest-library to match. But that didn't solve the problem.

I knew I'd run into this before so I went to my blog to see how I'd resolved it. I found Eclipse Hamcrest Runaround and I Give Up but nothing about how I eventually got it to work. It's funny how my blogs have become my external memory and I'm unhappy if I forget to record something.

After searching the web and messing around I realized the easiest solution is just to remove the Eclipse JUnit from the build path and have my own junit, hamcrest-core, and hamcrest-library. That seems to solve the problem.

See also:

• Moving from Eclipse Indigo to Juno
• Upgrading to Eclipse Indigo
• Upgrading Eclipse to Helios (3.6)

Although I don't feel like I'm usually recording much useful information, these upgrade posts are some of my most frequently visited. That may just be because they come up in searches.