How to create a javaDb within netbeans?

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4.00/5 (1 vote)

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Hello everyone. I am developing a desktop application via netbeans. I need to create a database. I hava tried oracle. However I couldn't become successful. so I searched and decided on JavaDB which is within Netbeans. I have used a guide to create the database. Now I want to insert data via interface. I have a form which includes 2 textboxes (username and user password) and a combobox (user role). I have done something but does not work. Could you help me ?

Java

try
         { 
            Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
         }catch(ClassNotFoundException e)
         {
            System.out.println(e);
         }
        
        try {
            //1.Kısım Baglantı Saglıyoruz
            this.host = "jdbc:derby://localhost:1527/EMRE";
            this.Name = "emre";
            this.Pass = "2561";
            Connection con = DriverManager.getConnection(host,Name,Pass);
             
            //2.Kısım Statement Olusturuyorum
            
            Statement cumle = con.createStatement();
            String query = "INSERT INTO P_LOGIN VALUES('"+txtAddUserName.getText()+"','"+txtAddUserPassWord.getText()+"','"+cmbAddUserRole.getSelectedItem().toString()+"')";
            ResultSet rs = cumle.executeQuery(query);
          
            
            
            }
        catch (SQLException ex) {
            JOptionPane.showMessageDialog(null, ex);
        }

This is my ADD button code. Where am I doing wrong? Please show me a way.

Posted 6-Aug-12 20:42pm

FoxRoot

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Raje_ 7-Aug-12 2:46am

what error are you getting?

3 solutions

Solution 2

I'm with Rajesh - Derby rules! +5 for that.

But I guess your google is broken and you are searching for this tutorial:
Working with the Java DB (Derby) Database[^]

Posted 6-Aug-12 21:16pm

TorstenH.

Solution 3

Java

try {
            //1.Kısım Baglantı Saglıyoruz
            this.host = "jdbc:derby://localhost:1527/EMRE";
            this.Name = "emre";
            this.Pass = "2561";
            Connection con = DriverManager.getConnection(host,Name,Pass);
             
            //2.Kısım Statement Olusturuyorum
            
            Statement cumle = con.createStatement();
            
            cumle.executeUpdate("INSERT INTO P_LOGIN " + " (SIFRE, KULLANICI_ADI, ROLE)" + " VALUES ('"+txtAddUserPassWord.getText()+"','"+txtAddUserName.getText()+"','"+cmbAddUserRole.getSelectedItem()+"')");             
            
            }
        catch (SQLException ex) {
            JOptionPane.showMessageDialog(null, ex);
        }

Thanks to TorstenH. and Rajesh.

Posted 6-Aug-12 21:51pm

FoxRoot

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Raje_ · Accepted Answer · 2012-08-06T20:49:00

Solution 1

Here you are using createStatement() method, because you are inserting values to database you need to use prepareStatement method:-

Java

PreparedStatement ps = scon.prepareStatement("INSERT INTO P_LOGIN VALUES(?,?,?)");
          ps.setString(1, txtAddUserName.getText());
          ps.setString(2, txtAddUserPassWord.getText());
          ps.setString(3, cmbAddUserRole.getSelectedItem().toString());
          int i = ps.executeUpdate();
          if (i > 0)
          {
             //do your stuff
          }

For dealing with JavaDB, Please go through this link:-
Working with the Java DB (Derby) Database[^]

Good luck.

Posted 6-Aug-12 20:49pm

Raje_

Updated 6-Aug-12 21:49pm

v2

Comments

FoxRoot 7-Aug-12 3:06am

I have already read this article. However, ı am working with interface. This does not help. Thanks.

TorstenH. 7-Aug-12 3:16am

you are "working with interface" ??? hmm, interesting.

FoxRoot 7-Aug-12 3:25am

TorstenH you helped me too much. But you don't understand me. I am asking question after I made research.
So please be more serious. English is not my mother tonque.

TorstenH. 7-Aug-12 3:37am

Then try to explain what you mean by "working with interface".
That's as explicit as "working with computers".

FoxRoot 7-Aug-12 3:40am

I am sorry. I mean that I am working with jFrame. Namely I want to get data via textboxes and save them into database. That is all that I want to.

Raje_ 7-Aug-12 3:50am

Check my Updated Solution.

FoxRoot 7-Aug-12 4:03am

Thanks Rajesh. I solved.

TorstenH. 7-Aug-12 4:31am

then please except Rajesh's answer to show that it is solved (green mark in overview).

FoxRoot 7-Aug-12 5:04am

Ok TorstenH. I did it. I have one more question :)