BAEL-4475 (#10151)

* Added code for checking if a class is abstract or not.

* Renamed test name as per review comments.

* Added code to get database URL from Connection object.

* Refactored code to break lines.

persistence-modules/core-java-persistence-2/src/test/java/com/baeldung/getdburl/DBConfigurationUnitTest.java

@@ -0,0 +1,18 @@
+package com.baeldung.getdburl;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.sql.Connection;
+
+import org.junit.jupiter.api.Test;
+
+class DBConfigurationUnitTest {
+
+    @Test
+    void givenConnectionObject_whenExtractMetaData_thenGetDbURL() throws Exception {
+        Connection connection = DBConfiguration.getConnection();
+        String dbUrl = connection.getMetaData().getURL();
+        assertEquals("jdbc:h2:mem:testdb", dbUrl);
+    }
+
+}