jdbc problem

Hi,

I hav postgresql 15 installed in my windows computer.

I have maven java project, wich works temporarly in Eclipse, but mvn
install did'nt work.

Now it works, but I have got error -

Exception in thread "main" java.lang.NoSuchMethodError:
'org.postgresql.core.Encoding
org.postgresql.core.BaseConnection.getEncoding()'
        at
org.postgresql.jdbc2.AbstractJdbc2ResultSet.getString(AbstractJdbc2ResultSet.java:1889)
        at
org.postgresql.jdbc2.AbstractJdbc2ResultSet.getTimestamp(AbstractJdbc2ResultSet.java:438)
        at
org.postgresql.jdbc2.AbstractJdbc2ResultSet.getTimestamp(AbstractJdbc2ResultSet.java:2406)
        at backendproject.BackendMain.main(BackendMain.java:64)

backendproject.BackendMain.main(BackendMain.java:64) line is following -

Timestamp oldest_timestamp= resultSet.getTimestamp("oldest_timestamp");

Query from Java is following -

String query= "SELECT timestamp AS oldest_timestamp FROM mushrooms";

PreparedStatement statement= connection.prepareStatement(query);

ResultSet resultSet= statement.executeQuery();

And pom.xml contains -

<dependencies>

<dependency>

<groupId>org.postgis</groupId>

<artifactId>postgis-jdbc</artifactId>

<version>1.3.3</version>

</dependency>

<dependency>

<groupId>org.postgresql</groupId>

<artifactId>postgresql</artifactId>

<version>42.2.0</version>

</dependency>

and mvn install gives -

[INFO] --- dependency:3.6.0:copy-dependencies (copy-dependencies) @
backendproject --- [INFO] Copying postgis-jdbc-1.3.3.jar to
C:\Users\Raivo\eclipse-workspace\backendproject\target\lib\postgis-jdbc-1.3.3.jar
[INFO] Copying postgis-stubs-1.3.3.jar to
C:\Users\Raivo\eclipse-workspace\backendproject\target\lib\postgis-stubs-1.3.3.jar
[INFO] Copying postgresql-8.3-603.jdbc4.jar to
C:\Users\Raivo\eclipse-workspace\backendproject\target\lib\postgresql-8.3-603.jdbc4.jar
[INFO] Copying postgresql-42.2.0.jar to
C:\Users\Raivo\eclipse-workspace\backendproject\target\lib\postgresql-42.2.0.jar

What is reason of this error and how to resolv it ?

Regards

Raivo