Swing / AWT / SWT

JDialog Netbeans Runtime

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Greetings coders, this is my very first post, i'm glad to join to the community!

i'm a newcomer into netbeans and java so i'm doing my best, here is my problem

i want a personalised JDialog on my main JFrame and i'm using netbeans as my IDE but new problems arises

firstly i have this code which is inside a class that gives me access to a database (no problem)
inside that package there is my personalised JDialog ErrorConexion, but i want to call this method from my MAIN JFrame form, the one netbeans creates
from a buttonacctionperformed event

public static ErrorConexion  Connect() {
         try {
            
                Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
             
            Conexion = DriverManager.getConnection(Conexionurl);
            Statement stm = Conexion.createStatement();
            lsresultset = stm.executeQuery("select getdate()");
            System.out.println("connection Succed");
        }
         catch (SQLException e){
         return new ErrorConexion(new javax.swing.JFrame(),false);
         }
         catch (ClassNotFoundException ex) {
                Logger.getLogger(CConexion.class.getName()).log(Level.SEVERE, null, ex);
            }
      return new ErrorConexion(new javax.swing.JFrame(),false);
       
    }

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