Lambda expressions are not supported in -source 6

Question

when i package my code, i get this error Error:(13,48) java: lambda expressions are not supported in -source 6.

I tried installing different JDK, but doesnt change. I tried jdk 11, 1.8, 13.

If you see the same error after you install a newer JDK, then you aren't using the compiler from the newer one. To figure out why, what OS are you using? — Code-Apprentice
– Code-Apprentice, Commented Mar 20, 2020 at 15:30
How are you building your package? And can you show example code, including a pom file. I suggest just creating a small project that you can use for troubleshooting. — Code-Apprentice
– Code-Apprentice, Commented Mar 20, 2020 at 15:34

Ezequiel · Accepted Answer · 2020-03-20 15:32:11Z

5

You need to specify in the pom the java version your project uses. Add this section to your pom.xml to specify java 8 for instance

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>8</source>
                    <target>8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

answered Mar 20, 2020 at 15:32

Ezequiel

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