Java.sql.SQLException: Error in allocating a connection

Question

hi,
I have developed enterprise application using net beans IDE 5.5.I created one enity bean using sql server database.When i tried deploy this project i am getting following error...
Internal Exception: java.sql.SQLException: Error in allocating a connection.
Cause: Class name is wrong or classpath is not set for : com.microsoft.jdbc.sqlserver.SQLServerDataSourceError
can anybody please help me.....where i went wrong...i am new to netbeans IDE
regrds
patel

Answer 1

u need to download the three jar files.
download the following jar files and add in ur classpath.
msutil-2000.sp2-lib.jar
msbase-2000.sp2-lib.jar
mssqlserver-2000.sp2-lib.jar
This is sample program...
u can test in standalone first and do in netbeans....
import java.sql.*;
public class querybean {
public String getdata(String sql) {
     try {
System.out.println("testing connection ");
          Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
     Connection connection = DriverManager.getConnection("jdbc:microsoft:sqlserver://localhost:1433;databaseName=master;user=sa;password=userpass;");
     Statement statement = connection.createStatement();
ResultSet rs = statement.executeQuery(sql);
System.out.println("testing connection pooling");
while(rs.next()) {
System.out.println(rs.getString(1));
} catch(Exception e1) {
System.out.println("exception caught" + e1);
return "";
public static void main (String args[]) throws Exception {
querybean qb = new querybean();
qb.getdata("select * from sampletable");
I belive it will work now