Add maven compiler plugin for java 11
</dependency>
</dependencies>
+ <build>
+ <plugins>
+ <plugin>
+ <groupId>org.apache.maven.plugins</groupId>
+ <artifactId>maven-compiler-plugin</artifactId>
+ <configuration>
+ <source>11</source>
+ <target>11</target>
+ <compilerVersion>11</compilerVersion>
+ </configuration>
+ </plugin>
+ </plugins>
+ </build>
<properties>
<!-- testing -->
<assertj-core.version>3.10.0</assertj-core.version>
