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- 09-09-2011, 04:14 PM #1
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Runtime Exceptions for JDBC program using Derby Client in Netbeans
even though i've imported .jar file for the Derby client required , i couldn't overcome this exception .XML Code:I was trying to connect to a simple database through netbeans using the Type 4 connectivity ( Derby ) . Although i could successfully compile the following code for it : [b]Source Code [/b] [code=java] package javaapplication2; import java.sql.*; public class JavaApplication2 { public static void main(String[] args) throws ClassNotFoundException, SQLException { String name; int id; Class.forName("org.apache.derby.jdbc.ClientDriver"); Connection con=DriverManager.getConnection("jdbc:derby://localhost:1527/Sample1"); Statement stmt=con.createStatement(); ResultSet rs=stmt.executeQuery("Select *from Kasi"); while(rs.next()) { id=rs.getInt(1); name=rs.getString(2); System.out.print("\nId="+id+"\nName="+name); } // TODO code application logic here } } [/code] I am getting the following Exception : [b]Exception [/b] Exception in thread "main" java.sql.SQLNonTransientConnectionException: java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused: connect. at org.apache.derby.client.am.SQLExceptionFactory40.getSQLException(Unknown Source) at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source) at org.apache.derby.jdbc.ClientDriver.connect(Unknown Source) at java.sql.DriverManager.getConnection(DriverManager.java:579) at java.sql.DriverManager.getConnection(DriverManager.java:243) at javaapplication2.JavaApplication2.main(JavaApplication2.java:22) Caused by: org.apache.derby.client.am.DisconnectException: java.net.ConnectException : Error connecting to server localhost on port 1527 with message Connection refused: connect. at org.apache.derby.client.net.NetAgent.<init>(Unknown Source) at org.apache.derby.client.net.NetConnection.newAgent_(Unknown Source) at org.apache.derby.client.am.Connection.<init>(Unknown Source) at org.apache.derby.client.net.NetConnection.<init>(Unknown Source) at org.apache.derby.client.net.NetConnection40.<init>(Unknown Source) at org.apache.derby.client.net.ClientJDBCObjectFactoryImpl40.newNetConnection(Unknown Source) ... 4 more Caused by: java.net.ConnectException: Connection refused: connect at java.net.DualStackPlainSocketImpl.connect0(Native Method) at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:69) at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:337) at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:198) at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:180) at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157) at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391) at java.net.Socket.connect(Socket.java:579) at java.net.Socket.connect(Socket.java:528) at java.net.Socket.<init>(Socket.java:425) at java.net.Socket.<init>(Socket.java:208) at javax.net.DefaultSocketFactory.createSocket(SocketFactory.java:271) at org.apache.derby.client.net.OpenSocketAction.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) ... 10 more Java Result: 1 BUILD SUCCESSFUL (total time: 3 seconds)
So it would be really great if you could Kindly help me to overcome this Excception to run my first JDBC Program :)
Thanks in Advance
Regards,
Kasiraj
- 09-12-2011, 10:42 AM #2
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