Java Connection to PostgreSQL

package connection;
import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
public class DbManager {
public String date = new SimpleDateFormat("dd-MM-yyyy-HH-mm").format(new Date());
private final String createTable = "CREATE TABLE \"" + date + "\" (id INT, data VARCHAR(100));";
private static final int LoginTimeout = 10;
public DbManager() {
}
public Connection createConnection() throws IOException, ClassNotFoundException, SQLException {
Properties prop = new Properties();
System.out.println("\n\n=======================\nJDBC Connector Test " + date);
System.out.println("User home directory: " + System.getProperty("user.home"));
String host;
String username;
String password;
String driver;
try {
prop.load(new java.io.FileInputStream(System.getProperty("user.home") + "/mydb.cfg"));
host = prop.getProperty("host").toString();
username = prop.getProperty("username").toString();
password = prop.getProperty("password").toString();
driver = prop.getProperty("driver").toString();
} catch (IOException e) {
System.out.println("Unable to find mydb.cfg in " + System.getProperty("user.home") + "\n Please make sure that configuration file created in this folder.");
host = "Unknown HOST";
username = "Unknown USER";
password = "Unknown PASSWORD";
driver = "Unknown DRIVER";
}
System.out.println("host: " + host + "\nusername: " + username + "\npassword: " + password + "\ndriver: " + driver);
Class.forName(driver);
System.out.println("--------------------------");
System.out.println("DRIVER: " + driver);
System.out.println("Set Login Timeout: " + LoginTimeout);
DriverManager.setLoginTimeout(LoginTimeout);
Connection connection = DriverManager.getConnection(host, username, password);
System.out.println("CONNECTION: " + connection);
return connection;
}
public String runSqlStatement() {
String result = "";
try {
Statement statement = createConnection().createStatement();
System.out.println("SQL query: " + createTable);
statement.execute(createTable);
} catch (IOException | ClassNotFoundException ex) {
Logger.getLogger(DbManager.class.getName()).log(Level.SEVERE, null, ex);
System.out.println("Exception occurred: " + ex);
result = ex.getMessage();
} catch (SQLException ex) {
ex.printStackTrace();
result = ex.getMessage();
}
return result;
}
}