setAsciiStream(int, InputStream, long) and
setAsciiStream(int, InputStream)

[project-name] > Properties > Java Compiler > Compiler compliance level

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
        <version>3.5.1</version>
        <configuration>
        <verbose>true</verbose>
        <fork>true</fork>
        <executable>C:Program FilesJavajdk1.8.0_102binjavac</executable>
        <source>1.8</source>
        <target>1.8</target>
     </configuration>
 </plugin>