[ISSUE #5068] Fix return types in ByteBuffer to Support JAVA9+

[qianye1001]

Which Issue(s) This PR Fixes

Fixes #issue_id
#5068

Brief Description

Java 9 introduces overridden methods with covariant return types for the following methods in java.nio.ByteBuffer:

• position
• limit
• flip
• clear

How Did You Test This Change?

After compiling in the Java11 environment, it can run in the Java8 environment and send and receive messages normally

[aaron-ai]

Nice catch!

[github-actions]

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[github-actions]

This PR was closed because it has been inactive for 3 days since being marked as stale.

[HattoriHenzo]

[late answer] To solve this issue I had to recompile the jar with the JAVA_HOME set to Java 8 or 1.8 because the maven settings for the version of Java are set like this:

<!-- Compiler settings properties -->
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>

If you are using docker, use the eclipse-temurin:8-jdk-alpine image.