Target JDK 1.8, build with JDK >= 11

Author: gnodet

pom.xml

@@ -101,8 +101,8 @@
  </distributionManagement>
 
  <properties>
- <javadocSource>7</javadocSource>
- <jdkTarget>1.7</jdkTarget>
+ <javadocSource>8</javadocSource>
+ <jdkTarget>8</jdkTarget>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  <slf4j-version>1.6.1</slf4j-version>
  <project.build.outputTimestamp>2021-10-14T05:42:06Z</project.build.outputTimestamp>
@@ -165,25 +165,8 @@
  <artifactId>maven-compiler-plugin</artifactId>
  <version>3.8.1</version>
  <configuration>
- <source>8</source>
- <target>8</target>
+ <release>${jdkTarget}</release>
  </configuration>
- <executions>
- <execution>
- <id>default-compile</id>
- <configuration>
- <source>${jdkTarget}</source>
- <target>${jdkTarget}</target>
- </configuration>
- </execution>
- <execution>
- <id>default-testCompile</id>
- <configuration>
- <source>1.8</source>
- <target>1.8</target>
- </configuration>
- </execution>
- </executions>
  </plugin>
  <plugin>
  <groupId>org.apache.felix</groupId>