Trying to connect to database in Java DB netbeans?

Question

I'm trying to connect to embedded database Java DB from NetBeans 7.1.

this is what I tried:

    try{
    String driver = "org.apache.derby.jdbc.EmbeddedDriver";
    String url = "jdbc:derby:market; create=true";
    String db = "/artikli";
    String user = "wolf";
    String pass = "wolf";
    String query = "SELECT * FROM artikli";
    Connection conn = null;

        Class.forName(driver);
        conn = DriverManager.getConnection(url + db, user, pass);
        java.sql.Statement stmt = conn.createStatement();
        ResultSet res = stmt.executeQuery(query); 

        System.out.println(res.getString("naziv")); // naziv = column name


        res.close();

    }catch(Exception e){

    }

My question is how to get data and print, or populate JTable with it, and is this connection good, thanks? thank you in advance.

Answer 1

您必须将结果集推进到第一个条目，如下所示：

while(res.next()){System.out.println(res.getString("naziv"));}

Answer 2

查看您的代码，甚至不打印预期的错误，catch块为空，因此打印此异常，您将得到答案。