CODEWITHSUNDEEP
javamavenlambda
Ayman Patel
Ayman Patel

Reputation: 634

Lambda error during maven build

I am using Maven build to build my project(using Eclipse IDE). I have put jdk1.8 as default jdk, but still, I am getting an error as the source is 1.6. Is there a configuration problem I am missing out? Please let me know?

   (use -source 8 or higher to enable lambda expressions)

1. "clean install" as goals in "Run Configurations" in Eclipse.

2.pom.xml file

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.mastercard.ayman</groupId>
  <artifactId>Spring_MVC</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.4.2.RELEASE</version>
  </parent>
  <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
          <groupId>org.springframework.data</groupId>
          <artifactId>spring-data-rest-webmvc</artifactId>
          <version>3.0.7.RELEASE</version>
         </dependency>
  </dependencies>


    <repositories>
        <repository>
            <id>spring-libs-release</id>
            <name>Spring Releases</name>
            <url>https://repo.spring.io/libs-release</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

</project>
  1. Compiler is JavaSE-1.8

Upvotes: 0

Views: 404

Answers (3)

pamcevoy
pamcevoy

Reputation: 1246

Either set the maven-compiler-plugin as @Horst says or set the maven.compiler.source and maven.compiler.target properties like this.

<project ...>
  ...

  <properties>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
  </properties>

  <dependencies>
    ...
  </dependencies>

  <build>
    ...
  </build>
</project>

Upvotes: 1

Horst
Horst

Reputation: 373

Setting the JDK in eclipse is only half the story, as maven manages the compiler itself.

Try adding the maven compiler plugin to you build configuration:

<plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.2</version>
    <configuration>
        <source>1.8</source>
        <target>1.8</target>
    </configuration>
</plugin>

Upvotes: 0

user9896706
user9896706

Reputation:

This is something I have dealt with too many times. Could you post the following things as an answer?

  1. Your current build command/query.
  2. Your pom.xml code.
  3. Your compiler version.

With these file(s) I could help you further to resolve your problem!

Upvotes: 0

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