Compile Java tests with 1.7

Maven was complaining that default 1.5 won't be supported anymore

Author: tcalmant

tests/java/pom.xml

@@ -9,6 +9,8 @@
 
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <maven.compiler.source>1.7</maven.compiler.source>
+        <maven.compiler.target>1.7</maven.compiler.target>
 	</properties>
 
 	<dependencies>
@@ -19,4 +21,4 @@
 			<scope>test</scope>
 		</dependency>
 	</dependencies>
-</project>
+</project>