Java – unable to connect to SQL Server database using JDBC

I am trying to connect to an existing database in SQL Server 2012n using NetBeans 8

Using the connection wizard, I select SQL Server 2012 and enter credentials and fields

But I received a message that I couldn't establish a connection

You can see a screenshot of the input fields:

I also try to use "localhost" instead of "Stijn", which doesn't work I also try to use the default port "1433" It's no use, but what port should this be? Where can I see the port I'm using? Maybe the mistake is the port, otherwise I don't know where I made a mistake

Solution

Go to SQL Server Configuration Manager – > sql server network configuration – > protocol of sqlexpress – > TCP / IP (double-click properties)

Set enable to yes on the protocol page On the IP address page, scroll to the bottom TCP dynamic port: 54629 TCP port: 1433 apply and confirm

Establish connection: host: localhost port: 1433 your credential instance field = blank

This should work

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