Configure Maven to use different JDK for different J2SE versions?

Question

I want to configure Maven2 to use sun-java6-jdk to build Java SE 1.6 modules, and use openjdk-7 to build Java SE 1.7 modules. Is it possible?

Maven2 should then auto choose the correct JDK to build different modules in one command.

For example, it should be

$ mvn package 

instead of

$ cd module1 $ update-alternatives ... jdk6 ... $ mvn package ... $ cd module2 $ update-alternatives ... jdk7 ... $ mvn package 

P.S. It's nothing about pom.xml files, which have already been setup maven-compiler-plugin with different <source>, <target> values for different modules. If I choose to use openjdk-7, Maven2 will generate version 1.6 class files, but using openjdk-7 rather then sun-java6-jdk. The question is about how to configure Java SE profiles.

Answer 1

we solved this problem by explicitely sepecify the javac in config of compile plugin (with JAVA_HOME_6 and JAVA_HOME_7 defined as environment variables):

and for Java 6 module

<plugin>     <groupId>org.apache.maven.plugins</groupId>     <artifactId>maven-compiler-plugin</artifactId>     <configuration>         <source>1.6</source>         <target>1.6</target>         <showDeprecation>true</showDeprecation>         <showWarnings>true</showWarnings>         <executable>${env.JAVA_HOME_6}/bin/javac</executable>         <fork>true</fork>     </configuration> </plugin> 

and for Java 7 module

<plugin>     <groupId>org.apache.maven.plugins</groupId>     <artifactId>maven-compiler-plugin</artifactId>     <configuration>         <source>1.7</source>         <target>1.7</target>         <showDeprecation>true</showDeprecation>         <showWarnings>true</showWarnings>         <executable>${env.JAVA_HOME_7}/bin/javac</executable>         <fork>true</fork>     </configuration> </plugin>