Die Standard Compiler Einstellung für Maven ist das JDK 1.4 . Da sogar Java 1.5 das End of Life schon lange erreicht hat, wollen die meisten ihr Projekt wohl mit Java 1.6 kompilieren.
Um Maven dazu zu bringen das JDK 1.6 zum kompilieren, benutzt man einfach das maven-compiler-plugin. Hier ein Beispiel aus meiner pom.xml:
We had a Problem with JBoss Seam 2.2.1.CR1 Logger. We were not able to log with parameters. (This is a known bug: https://jira.jboss.org/browse/JBSEAM-4606 )
I was looking for a tutorial which covers upgrading Seam, but I did not find any. So this is my solution how to upgrade from Seam 2.2.1.CR1 to Seam 2.2.1.CR2:
It is kind of a trivial job, because in normal case you just have to replace libraries. Here is a step to step tutorial:
JBoss changed its Repository URL, so our Nexus Repository Manager was not able to download the newest Hibernate Version (3.5.1-Final). Although the old JBoss Repository is readable and searchable we had problems downloading the .jar files. We changed the URL to the new JBoss Repository URL and everything worked fine again.
This is the new URL:
https://repository.jboss.org/nexus/content/groups/public
If you want to set the @author tag via Code Templates, you probably want to configure the name behind the tag. By default Eclipse takes your account name of your OS. If you want to set another name, you have to edit the eclipse.ini and add the following line:
-Duser.name=Name
Now your name will appear behind the tag.
If you install the m2eclipse Plugin for the Maven Integration in Eclipse, this Error could possibly be shown in the Eclipse console:
Eclipse is running in a JRE, but a JDK is required
Some Maven plugins may not work when importing projects or updating source folders.
If you have this issue, you should edit your eclipse.ini and add the following lines (on a Windows System) :
-vm
C:\path\to\JDK\bin\javaw.exe
Now your Eclipse should use the JDK to run with and the m2eclipse plugin should be happy.