Exemple

import java.sql.*;
import javax.sql.*;

public class ClassA {
public void method () {
Connection con = null;
try {
con = DriverManager.getConnection("database url");
}
finally {
con.close();
}
}
}


Solution
Utilisez javax.sql.DataSource pour ouvrir les connexions JDBC.

import java.sql.*;
import javax.sql.*;

public class ClassA {
public void method () {
Connection con = null;
DataSource d = null;
try {
con = d.getConnection();
}
finally {
con.close();
}
}
}