maven plugins to compile java 1.8 syntax but target jvm 1.7

pom.xml

                <!--
                    compile java 1.8, target java 1.7
                -->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.3</version>
                    <configuration>
                        <encoding>utf-8</encoding>
                        <source>1.8</source>
                        <target>1.8</target>
                    </configuration>
                </plugin>
                <plugin>
                    <groupId>net.orfjackal.retrolambda</groupId>
                    <artifactId>retrolambda-maven-plugin</artifactId>
                    <version>2.0.2</version>
                    <executions>
                        <execution>
                            <goals>
                                <goal>process-main</goal>
                                <goal>process-test</goal>
                            </goals>
                        </execution>
                    </executions>
                </plugin>
                <plugin>
                    <groupId>org.codehaus.mojo</groupId>
                    <artifactId>animal-sniffer-maven-plugin</artifactId>
                    <version>1.14</version>
                    <executions>
                        <execution>
                            <id>signature-check</id>
                            <phase>prepare-package</phase>
                            <goals>
                                <goal>check</goal>
                            </goals>
                        </execution>
                    </executions>
                    <configuration>
                        <signature>
                            <groupId>org.codehaus.mojo.signature</groupId>
                            <artifactId>java17</artifactId>
                            <version>1.0</version>
                        </signature>
                    </configuration>
                </plugin>