How to get hsqldb-2.7.1-jdk8.jar from maven central repository-CodePudding

I have jdk-8 in my local, and I using gradle to build my project. I try to update my hsqldb from version 2.5.2 to 2.7.1. After I update my gradle script:

runtime "org.hsqldb:hsqldb:2.5.2"

runtime "org.hsqldb:hsqldb:2.7.1"

Then I build with gradle but it download the java-11 version. Which led an UnsupportedClassVersionError in my project. I found there is a java-8 version in the maven central repository https://repo1.maven.org/maven2/org/hsqldb/hsqldb/2.7.1/.But it will not be downloaded automatically.

I wish can update hsqldb to the latest version, then run gradle build and it can download the correct version. And I can run my project sucessfully.

CodePudding user response：

You need to provide the classifier, which is jdk8 in this case. In your pom.xml:

<dependency>
    <groupId>org.hsqldb</groupId>
    <artifactId>hsqldb</artifactId>
    <version>2.7.1</version>
    <classifier>jdk8</classifier>
</dependency>

I know you asked for Gradle but it is the same principle.

CodePudding user response：

you can add classifier to your implementation like this

runtime "org.hsqldb:hsqldb:2.7.1:jdk8"

And you can make sure its added with gradle dependencies

it will show you

runtimeClasspath - Runtime classpath of source set 'main'.
\--- org.hsqldb:hsqldb:2.7.1

testRuntimeClasspath - Runtime classpath of source set 'test'.
\--- org.hsqldb:hsqldb:2.7.1