Why does dbConnection remain null?

Swears that the database does not exist. Indeed, dbConnection for some reason remains null .

 public class CreatingConnection { private static Connection getDBConnection() { Connection dbConnection = null; try { Class.forName("org.postgresql.Driver"); } catch (ClassNotFoundException e) { System.out.println(e.getMessage()); } try { dbConnection = DriverManager.getConnection("jdbc:postgresql::port/db","postgres", "user"); return dbConnection; } catch (SQLException e) { System.out.println(e.getMessage()); } return dbConnection; } static void createDbUserTable() throws SQLException { Connection dbConnection = null; Statement statement = null; String createTableSQL = "CREATE TABLE DBUSER(" + "USER_ID NUMBER(5) NOT NULL, " + "USERNAME VARCHAR(20) NOT NULL, " + "MESSAGE VARCHAR(20) NOT NULL, " + ")"; try { dbConnection = getDBConnection(); System.out.println(dbConnection); statement = dbConnection.createStatement(); statement.execute(createTableSQL); System.out.println("Table \"dbuser\" is created!"); } catch (SQLException e) { System.out.println(e.getMessage()); } finally { if (statement != null) { statement.close(); } if (dbConnection != null) { dbConnection.close(); } } } }