JDBC driver connection problem

When I execute the below program I am getting the following error please help me..I have set class path to ojdbc14.jar also.. please help

Code:

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import java.sql.*;
public class Con2{
public static void main(String a[]) throws Exception{

Driver drv=new oracle.jdbc.driver.OracleDriver();
DriverManager.registerDriver(drv);
System.out.println("h");

Connection con=DriverManager.getConnection("jdbcracle:thin:@localhost:1521rcl","scott","tiger");

System.out.println("--connected-->"+con.getClass());
}}

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Code:

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Exception in thread "main" java.sql.SQLException: Io exception: The Network Adapter could not establish the connection
at oracle.jdbc.driver.DatabaseError.throwSqlException(DatabaseError.java
:125)....

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Most probably "listener" (Oracle's miniserver) knows about some instances and does not know about others. Check the file "listener.ora". Add missing entries and restart "listener" by invoking lsnctrl.sh(small shell with several commands).
Read docs on 'listener", "listener.ora" for more info.

Check this post, it might help you to solve your problem:

JavaRanch Big Moose Saloon: Io Exception: The Network Adapter could not establish the connection

Please check this code, please:

Code:

---

import java.sql.*;
public class Con2{
public static void main(String a[]) throws Exception{

Driver drv=new oracle.jdbc.driver.OracleDriver();
DriverManager.registerDriver(drv);
System.out.println("h");

Connection con=DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:rcl","scott","tiger");

System.out.println("--connected-->"+con.getClass());
}}

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