Wicketstuff core modules that require to be build using Java 7. Typically this is because of a Java 7 feature requirement or Java 7 compiled upstream dependency.
'org.wicketstuff:jdk-1.7-parent:6.0.0-beta1.1'
<dependency> <groupId>org.wicketstuff</groupId> <artifactId>jdk-1.7-parent</artifactId> <version>6.0.0-beta1.1</version> </dependency>
<dependency org="org.wicketstuff" name="jdk-1.7-parent" rev="6.0.0-beta1.1"/>
"org.wicketstuff", "jdk-1.7-parent", "6.0.0-beta1.1"