Prova sotto il codice
public int num() throws Exception {
try {
// This will load the MySQL driver, each DB has its own driver
Class.forName("com.mysql.jdbc.Driver");
// Setup the connection with the DB
connect = DriverManager.getConnection("jdbc:mysql://localhost/testdb?"
+ "user=root&password=");
// Statements allow to issue SQL queries to the database
statement = connect.createStatement();
resultSet = statement.executeQuery("select count(*) from testdb.emg");
while (resultSet.next()) {
return resultSet.getInt(1);
}
} catch (Exception e) {
}
Di seguito c'era l'errore
-
public void num() throws Exception {dovrebbe essere
public int num() throws Exception { -
Per contare le righe totali dovresti usare la query
select count(*) from testdb.emg
Fammi sapere in caso di problemi.
