How to compile jee-pac4j-demo in Java 8

[Adrian Campanaro]

Hi

I am using JDK 1.8 and downloaded

https://github.com/pac4j/jee-pac4j-demo

When running command

mvn clean package jetty:run

I get error

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project jee-pac4j-demo: Fatal error compiling: invalid flag: --release -> [Help 1]

In pom.xml I did the following:

Removed

<release>${java.version}</release>

and

changed

<java.version>11</java.version>

to

<java.version>1.8</java.version>

Now I get error:

ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project jee-pac4j-demo: Compilation failure: Compilation failure:
[ERROR] /c:/Monash/LDS/jee-pac4j-demo/src/main/java/org/pac4j/demo/jee/DemoConfigFactory.java:[48,70] lambda expressions are not supported in -source 1.6
[ERROR]   (use -source 8 or higher to enable lambda expressions)
[ERROR] /c:/Monash/LDS/jee-pac4j-demo/src/main/java/org/pac4j/demo/jee/DemoConfigFactory.java:[89,71] diamond operator is not supported in -source 1.6
[ERROR]   (use -source 7 or higher to enable diamond operator)
[ERROR] /c:/Monash/LDS/jee-pac4j-demo/src/main/java/org/pac4j/demo/jee/ForceLoginFilter.java:[31,154] lambda expressions are not supported in -source 1.6
[ERROR]   (use -source 8 or higher to enable lambda expressions)

Regards

Adrian

[Jérôme LELEU]

Hi,

The latest versions of pac4j and jee-pac4j are based on JDK11.

Use older versions for JDK8.

Thanks.

Best regards,

Jérôme

 

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[Adrian Campanaro]

Thanks Jérôme

How do I get older versions?

Regards

Adrian

[Jérôme LELEU]

By using specific branches:

https://github.com/pac4j/jee-pac4j/tree/5.0.x

https://github.com/pac4j/jee-pac4j-demo/tree/5.0.x

To view this discussion on the web visit https://groups.google.com/d/msgid/pac4j-users/5b368cae-433b-44ec-a349-aec33676286bn%40googlegroups.com.

[Adrian Campanaro]

Thanks so much. that worked.