使用CircleCI执行时无法解析Java 8导入

Question

I have a Java 8 project, built with maven. I'm using CircleCI as continuous integration, and I get the following error message during the build:

import java.util.function.Consumer;
       ^^^^^^^^^^^^^^^^^^
The import java.util.function cannot be resolved

I have:

<source>1.8</source>
<target>1.8</target>

in my maven-compiler plugin. When I run the build locally, with mvn clean install , or with mvn integration-test , as it is executed in CircleCI, I get no errors.

Is there some problem when using CircleCI with a Java 8 project?

The project source can be found here: https://github.com/verjigorm/DragonPunch.git

Edit: I had a look at the links suggested below, and fixed the build by adding:

machine:
  java:
    version:
      oraclejdk8

to my circle.yml file.

Answer 1

Just because you specify that you want to use Java 8 in your pom file does not mean it's going to be available.

According to the Circle Documentation , they default to oraclejdk7 as the Java runtime. You'll have to specify something that supports Java 8, like oraclejdk8 instead.

Answer 2

According to CircleCi documentation , it uses by default Java 1.7.0_55

Check the configuration to set a JDK 8 instead of this