Maven, can't see my h2 class - maven

Question

I have some problem with my university project
I'm trying to connect to my h2 database but i'm failing on it.
I'm include it Maven dependencies but it still doesn't work.
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
<version>1.4.186</version>
</dependency>
I get only classnotfoundexception
public class main {
public static void main(String[] a)
{
Class.forName("org.h2.Driver");
try (Connection conn = DriverManager.getConnection("jdbc:h2:~/test");
Statement stat = conn.createStatement()) {
stat.execute("create table test(id int primary key, name varchar(255))");
stat.execute("insert into test values(1, 'Hello')");
try (ResultSet rs = stat.executeQuery("select * from test")) {
while (rs.next()) {
System.out.println(rs.getString("name"));
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
Any suggestion?

Answer 1

This is failing because the h2 db driver classes are not in the classpath at runtime. You should bundle them with your app's jar file, if they are not somehow made the part of the app's classpath.
Use maven-shade-plugin, or maven-jar-plugin to bundle the dependencies with your app's jar (in this case it is called the Uber jar) so as to make it single independent runnable jar.