CODEWITHSUNDEEP
javamavenpom.xml
kapil gupta
kapil gupta

Reputation: 353

maven takes Java 1.5 default even if JAVA_HOME is set to JDK11

I am using JDK 11 and my application has around 20 projects. Now I want my maven to pick JAVA_HOME instead of changing all pom.xml with maven-compiler-plugin or by properties. I have set JAVA_HOME to JDK 11 Output of mvn -v

OpenJDK 64-Bit Server VM warning: Ignoring option MaxPermSize; support was removed in 8.0
Apache Maven 3.0.5 (r01de14724cdef164cd33c7c8c2fe155faf9602da; 2013-02-19 19:21:28+0530)
Maven home: /home/krawler/apache-maven-3.0.5
Java version: 11.0.4, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-11-openjdk-11.0.4.11-0.el7_6.x86_64
Default locale: en_IN, platform encoding: UTF-8
OS name: "linux", version: "3.10.0-957.1.3.el7.x86_64", arch: "amd64", family: "unix"

But when I run mvn clean install I get below error:

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project mavenKwlCommonLibs: Compilation failure: Compilation failure:
[ERROR] error: Source option 5 is no longer supported. Use 6 or later.
[ERROR] error: Target option 1.5 is no longer supported. Use 1.6 or later.

Upvotes: 0

Views: 775

Answers (1)

J Fabian Meier
J Fabian Meier

Reputation: 35805

There is a difference between the JDK you use and the Java version you compile for. You can very well compile for Java 8 with a JDK 11 (just one example).

You need to set 

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

in your POM to the Java version you want to build for (see also https://maven.apache.org/plugins/maven-compiler-plugin/examples/set-compiler-source-and-target.html)

For Java 11, have also a look at https://stackoverflow.com/a/51586202/927493.

Upvotes: 2

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