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http://jira.codehaus.org/browse/MCOMPILER-80?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=208618#action_208618
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redstun commented on MCOMPILER-80:
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I think the default source and target level for maven compiler should be the
same as that of the java being used to invoke Maven.
i.e.
java 1.4 => source 1.4, target 1.4
java 1.5 => source 1.5, target 1.5
java 1.6 => source 1.6, target 1.6
that is to say maven should follow the default source/target level settings in
javac, as in the blog
http://blogs.sun.com/darcy/entry/source_target_class_file_version of Joseph D.
Darcy.
Default javac Source and Target Settings
JDK 1.4.0 and 1.4.1 only accepted source 1.3 and 1.4.
JDK/J2SDK Default Source Source Range Default Target Target Range
1.0.x 1.0 1.1
1.1.x 1.1 1.1
1.2.x 1.2 1.1 1.1 - 1.2
1.3.x 1.2/1.3 1.1 1.1 - 1.3
1.4.x 1.2/1.3 1.2 - 1.4 1.2 1.1 - 1.4
5 1.5 1.2 - 1.5 1.5 1.1 - 1.5
6 1.5 1.2 - 1.6 1.6 1.1 - 1.6
7 1.7 1.2 - 1.7 1.7 1.1 - 1.7
> Change default source level to 1.5
> ----------------------------------
>
> Key: MCOMPILER-80
> URL: http://jira.codehaus.org/browse/MCOMPILER-80
> Project: Maven 2.x Compiler Plugin
> Issue Type: Improvement
> Reporter: Grzegorz Borkowski
> Priority: Minor
>
> Deafult source level setting for Maven compiler plugin is 1.3, as far as I
> remember. This makes no sense. 1.3 is used at this moment only in legacy
> applications. Probability of porting such legacy application to Maven 2 is
> very small. I was working with such applications - none of them used Maven.
> In fact, I don't know any application using Maven, which requires level 1.3.
> On the other hand, Maven is used exensively in new applications. Most of them
> use Java 5 features (annotations, generics...). All new applications I create
> use Maven 2 and Java 5. Every time I setup such application it makes me crazy
> that I get errors on my generics and annoations, and I have to setup manually
> the source level to 1.5. Come on, we have year 2008, not 2000! Java 5 is here
> for several years already. So why Maven compiler plugin does not use the most
> reasonable default approach, instead it still assumes we are in 2000 year? If
> someone wants to use old java version, than he can change the source level.
> By default should be 1.5.
> The default setting can be changed in never wersion of maven compiler plugin.
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