The POM file of JForex-SDK contains a snippet:
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.0</version>
<inherited>true</inherited>
<configuration>
<source>1.6</source>
<target>1.6</target>
<fork>true</fork>
<encoding>UTF-8</encoding>
</configuration>
</plugin>
If one removes lines
<source>1.6</source>
<target>1.6</target>
he or she can use ALL Java 7 features (diamond notation etc.).
But method IClient.compileStrategy does not support Java 7 source files.