use -source 8 or higher to enable lambda expressions [duplicate]

问题

This question already has answers here:

Specifying java version in maven - differences between properties and compiler plugin (3 answers)

Closed 12 months ago.

I'm facing a build error when I try to run a Maven build. I created a simple Java project which includes lambda functions, due to this I'm getting

[ERROR] (...) lambda expressions are not supported in -source 1.5
[ERROR]   (use -source 8 or higher to enable lambda expressions)

My Java version is 1.8.0_172, my Maven version is 3.6.0.

回答1:

Add to your pom.xml

<properties>
    <java.version>1.8</java.version>
    <maven.compiler.source>${java.version}</maven.compiler.source>
    <maven.compiler.target>${java.version}</maven.compiler.target>
</properties>

回答2:

use maven compiler 1.8 or greater to enable lambda expressions in your code. Add the compiler as properties in your pom.xml

来源：https://stackoverflow.com/questions/54461677/use-source-8-or-higher-to-enable-lambda-expressions