Failed to upload spring boot to heroku

Question

In application.properties I specified java and maven version as

java.runtime.version=11
maven.version=4.0.0

Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project heroku-spring: Fatal error compiling: invalid target release: 11

How can I solve it?

Answer 1

You can change maven and java versions in your pom.xml file.

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

Answer 2

Creating system.properties file with the property java.runtime.version=11 in the root directory helped me with the same problem.