I have a program in scala where I use H2. When scala uses java 8 it works,
but it does not work when scala uses java 11.
I created a very simple program to show the problem:
object Main extends App {
println(Class.forName("org.h2.Driver"))
}
With java 1.8 I get:
scala -J-showversion CheckH2.scala
openjdk version "1.8.0_222"
OpenJDK Runtime Environment (build 1.8.0_222-8u222-b10-1~deb9u1-b10)
OpenJDK 64-Bit Server VM (build 25.222-b10, mixed mode)
class org.h2.Driver
I use the jar that I downloaded from
https://h2database.com/h2-2019-03-13.zip in my classpath.
When I use java 11 I get:
scala -J-showversion CheckH2.scala
openjdk version "11.0.7" 2020-04-14
OpenJDK Runtime Environment (build 11.0.7+10-post-Debian-3deb10u1)
OpenJDK 64-Bit Server VM (build 11.0.7+10-post-Debian-3deb10u1, mixed mode,
sharing)
java.lang.ClassNotFoundException: java.sql.Driver
at
java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:471)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.ClassLoader.defineClass1(Native Method)
at
java.base/java.lang.ClassLoader.defineClass(ClassLoader.java:1017)
at
java.base/java.security.SecureClassLoader.defineClass(SecureClassLoader.java:174)
at
java.base/java.net.URLClassLoader.defineClass(URLClassLoader.java:550)
at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:458)
at java.base/java.net.URLClassLoader$1.run(URLClassLoader.java:452)
at java.base/java.security.AccessController.doPrivileged(Native
Method)
at
java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:451)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
at java.base/java.lang.Class.forName0(Native Method)
at java.base/java.lang.Class.forName(Class.java:315)
at Main$.delayedEndpoint$Main$1(CheckH2.scala:2)
at Main$delayedInit$body.apply(CheckH2.scala:1)
at scala.Function0$class.apply$mcV$sp(Function0.scala:34)
at
scala.runtime.AbstractFunction0.apply$mcV$sp(AbstractFunction0.scala:12)
at scala.App$$anonfun$main$1.apply(App.scala:76)
at scala.App$$anonfun$main$1.apply(App.scala:76)
at scala.collection.immutable.List.foreach(List.scala:392)
at
scala.collection.generic.TraversableForwarder$class.foreach(TraversableForwarder.scala:35)
at scala.App$class.main(App.scala:76)
at Main$.main(CheckH2.scala:1)
at Main.main(CheckH2.scala)
.…
What could be the problem and how could I solve it?
--
Cecil Westerhof
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