Heading ##I have problem with my java application with database in mySQL and swing GUI.
When I've used localhost everything worked properly. But now I would like to share project with my friend and we decided to use server hosting. And here is a problem: Now application works very slow, after pressing a button I have to wait a few seconds for the program to respond. Also the connection is lost from time to time. I have no idea where can I find reason for the problem... Do somebody now what is the reason of this problem?
private static Connection connection = null;
Boolean error = false;
private static String jdbcURL = "jdbc:mysql://host_name:3306/db_name";
private static String user = "user";
private static String password = "password";
MakeConnection(Connection connection) throws SQLException{
this.connection = connection;
try {
getConnection();
System.out.print("Connected to the data base in MakeConnection");
}
catch(Exception e) {
error = true;
System.out.print("Error in connection in MakeConnection consturctor" + e.getMessage());
}
finally{
if(connection!=null) connection.close();
if(error) System.out.print("Problem with connection");
else System.out.print("Program finished");
}
}
public Connection getConnection() throws SQLException {
try {
Class.forName("com.mysql.cj.jdbc.Driver");
connection = DriverManager.getConnection(jdbcURL,user,password);
} catch (Exception e) {
e.printStackTrace();
}
return connection;
}
}
Also sometimes application shows this error: The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
