Appreciate any help or advice for a Java noob!

I have downloaded a package from Git, and am having trouble compiling the JAR.

It's been packed with Java 17, so I have installed JDK 1.7.0_79, and Maven 3.8.8, but when trying to run mvn clean install as instructed by the person who provided the code I receive the following errors.

Any help would be appreciated, as Java certainly isn't my area of expertise.

The machines are on my home network, with no proxies or other restrictions preventing internet access.

I have tried numerous things, including multiple different machines.

I have removed all entries from profiles, proxies, and mirrors in both my user and global settings.xml, but still get the same error whenever I try to compile the JAR.

I have not tried creating a repo for the plugins as I don't really know where to start with that.

The exact details of the error are as follows;

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------< bazmar:lastWarAutoFl >------------------------
[INFO] Building lastWarAutoFl 2.0.1
[INFO]   from pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
Downloading from central: .6/maven-resources-plugin-2.6.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.516 s
[INFO] Finished at: 2025-02-07T15:43:05+13:00
[INFO] ------------------------------------------------------------------------
[ERROR] Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6: Could not transfer artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.6 from/to central (): transfer failed for .6/maven-resources-plugin-2.6.pom: Received fatal alert: protocol_version -> [Help 1]

Many thanks for your help.

Appreciate any help or advice for a Java noob!

I have downloaded a package from Git, and am having trouble compiling the JAR.

It's been packed with Java 17, so I have installed JDK 1.7.0_79, and Maven 3.8.8, but when trying to run mvn clean install as instructed by the person who provided the code I receive the following errors.

Any help would be appreciated, as Java certainly isn't my area of expertise.

The machines are on my home network, with no proxies or other restrictions preventing internet access.

I have tried numerous things, including multiple different machines.

I have removed all entries from profiles, proxies, and mirrors in both my user and global settings.xml, but still get the same error whenever I try to compile the JAR.

I have not tried creating a repo for the plugins as I don't really know where to start with that.

The exact details of the error are as follows;

[INFO] Scanning for projects...
[INFO]
[INFO] ------------------------< bazmar:lastWarAutoFl >------------------------
[INFO] Building lastWarAutoFl 2.0.1
[INFO]   from pom.xml
[INFO] --------------------------------[ jar ]---------------------------------
Downloading from central: https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-resources-plugin/2.6/maven-resources-plugin-2.6.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time:  0.516 s
[INFO] Finished at: 2025-02-07T15:43:05+13:00
[INFO] ------------------------------------------------------------------------
[ERROR] Plugin org.apache.maven.plugins:maven-resources-plugin:2.6 or one of its dependencies could not be resolved: Failed to read artifact descriptor for org.apache.maven.plugins:maven-resources-plugin:jar:2.6: Could not transfer artifact org.apache.maven.plugins:maven-resources-plugin:pom:2.6 from/to central (https://repo.maven.apache.org/maven2): transfer failed for https://repo.maven.apache.org/maven2/org/apache/maven/plugins/maven-resources-plugin/2.6/maven-resources-plugin-2.6.pom: Received fatal alert: protocol_version -> [Help 1]

Many thanks for your help.

• java
• maven
• compiler-errors
• maven-plugin

• Couldn't add the POM details, but the content is available here; github.com/bazmar59/lastWarAutoFL – Matt Fallon Commented Feb 7 at 3:02
• Also, I'm not running an IDE, just trying to complete through command line. – Matt Fallon Commented Feb 7 at 3:03
• 1 It's been packed with Java 17, so I have installed JDK 1.7.0_79 So why have you not installed >= Java 17 in that case? – g00se Commented Feb 7 at 10:14
• There is simply no decision to make from your side... if JDK17 is required you have to use it...Also recommend to take a look at the answer of @SlawomirJaranowsi .... TLS 1.2 at minimum... – khmarbaise Commented Feb 7 at 18:01

1 Answer 1

You have an error:

 Received fatal alert: protocol_version

Maven Central supports TLS 1.2 only, for JDK 1.7 you can try:

mvn -Dhttps.protocols=TLSv1,TLSv1.1,TLSv1.2 <goals>

reference: https://www.sonatype.com/blog/maven-central-supports-tls-1.2-only-june-15