Java

import java.sql.*;

public class dbExample{
  public static void main(String[] args) {
    System.out.println("Listing all table name in Database!");
    Connection con = null;
    String url = "jdbc:mysql://localhost:3306/";
    String db = "mydb";
    String driver = "com.mysql.jdbc.Driver";
    String user = "root";
    String pass = "root";
    try{
      Class.forName(driver);
      con = DriverManager.getConnection(url+db, user, pass);
    }
    catch (Exception e){
      e.printStackTrace();
    }
  }
} 

public String Del_btn_action() {

     form1.discardSubmittedValues("addIncidentStatus");
     try {

         RowKey rk = tableRowGroup1.getRowKey();
         if (rk != null) {

           incidentStatusDataProvider.removeRow(rk);
            incidentStatusDataProvider.commitChanges();
             incidentStatusDataProvider.refresh();}

     } catch (Exception ex) {

         log("ErrorDescription", ex);
         error(ex.getMessage());
     }
     return null;
 }