com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure

http://netbeans-org.1045718.n5.nabble.com/com-mysql-jdbc-exceptions-jdbc4-CommunicationsException-Communications-link-failure-td2950072.html

It sounds like MySQL
server isn't running.

If you are using Windows, make sure mysqld
-nt.exe
is running. You can use Task Manager to see if the service is running
and Control Panel's Administrative Tools|Services dialog to start the
service if it is not. On my computer
the service name is MySQL
.

janpihlgren wrote:

Just installed NetBeans 6.5 and now try to run som javaprogram that require connection to a MySQL
-database.


I get this errormessage:


com
. mysql
. jdbc
. exceptions
. jdbc4
. CommunicationsException
: Communications
link
failure


and a point to these rows int the program:


        String _url = " jdbc
: mysql
://localhost:3306/" +database;


        Connection conn = DriverManager.getConnection(_url, user, pwd);