Netbeans-derby newbee problem

Question

hello everybody!
i have the java db in netbeans up and running, tables created and so on.
now when i want to access my database
(which is obviously there, in the databases node of the runtime its shown with tables :jdbc:derby://localhost:1527/mpdb)
netbeans gives me a
Exception in thread "main" java.sql.SQLException: Database 'mpdb' not found.
at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.generateCsSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.newSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection30.<init>(Unknown Source)
at org.apache.derby.impl.jdbc.EmbedConnection40.<init>(Unknown Source)
at org.apache.derby.jdbc.Driver40.getNewEmbedConnection(Unknown Source)
at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
at org.apache.derby.jdbc.AutoloadedDriver.connect(Unknown Source)
at java.sql.DriverManager.getConnection(DriverManager.java:582)
at java.sql.DriverManager.getConnection(DriverManager.java:154)
at mxnew.mpAdrData.connection(mpAdrData.java:62)
and heres the code:
    public String driver = "org.apache.derby.jdbc.EmbeddedDriver";     public String protocol = "jdbc:derby:";     private String databasename="mpdb";     private Statement s;     public void connection() throws SQLException, ClassNotFoundException {         try {             Class.forName(driver).newInstance();  //Load driver         } catch (ClassNotFoundException ex) {             ex.printStackTrace();         } catch (IllegalAccessException ex) {             ex.printStackTrace();         } catch (InstantiationException ex) {             ex.printStackTrace();         }  //Load driver         Connection conn = null;         Properties props = new Properties();         props.put("user", "admin");         props.put("password", "password");         conn = DriverManager.getConnection(protocol + databasename, props);         s = conn.createStatement();     }
How do i have to access the database ? thanks for your help!

Answer 1

I wanna to connect to database by means of code, how am i supposed to that
url:
jdbc:derby://localhost:1527/proj
driver
org.apache.derby.jdbc.ClientDriver
* RohitApp.java
package rohitapp;
import java.sql.*;
import org.jdesktop.application.Application;
import org.jdesktop.application.SingleFrameApplication;
* The main class of the application.
public class RohitApp extends SingleFrameApplication {
* At startup create and show the main frame of the application.
@Override protected void startup() {
show(new RohitView(this));
* This method is to initialize the specified window by injecting resources.
* Windows shown in our application come fully initialized from the GUI
* builder, so this additional configuration is not needed.
@Override protected void configureWindow(java.awt.Window root) {
* A convenient static getter for the application instance.
* @return the instance of RohitApp
public static RohitApp getApplication() {
return Application.getInstance(RohitApp.class);
* Main method launching the application.
public static void main(String[] args) {
launch(RohitApp.class, args);
}