connecting to Sql Server using JDBC

In ASP.NET web forms application I normally connect to SQL Server 2008 Express with this connection string and it works fine.

Data source:      Microsoft SQL Server
Data provider:      .NET Framework Data Provider for SQL Server

Connection String:

<add name="NorthwindConnection" connectionString="Data Source=MyComputer\SQLEXPRESS;Initial Catalog=Northwind;Integrated Security=True"
providerName="System.Data.SqlClient" />


I'm trying to learn to connect to Sql Server using JDBC driver as described here:
https://msdn.microsoft.com/en-us/library/ms378428(v=sql.105).aspx

So far I have this but this doesn't work.

jdbc:sqlserver://localhost:1433;instance=MyComputer\SQLEXPRESS;databaseName=Northwind;integratedSecurity=true;


Anyone know where I'm making a mistake?
LVL 1
maqskywalkerAsked:
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Marten RuneSQL Expert/Infrastructure ArchitectCommented:
Is the SQL a 2012 by chance
The User Instance feature is deprecated with SQL Server 2012, use the SQL Server Express LocalDB feature instead.

Or:
if you want to use Windows authentication mode (integratedSecurity=true), you must have the sqljdbc_auth.dll in the classpath, is it there?
Link: https://www.connectionstrings.com/sql-server/

Regards Marten
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Microsoft SQL Server 2008

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