The error describes the issue (the app can't reach the database at the address provided). If this is a new install of SQL server, you may need to open a firewall or enable TCP connections to SQL Server:
Your Java socket shows SocketTimeoutException means that it takes too long to get respond from other device and your request expires before getting response. This exception is occurring on following condition.
Solution: A developer can pre-set the timeout option for both client and server operations.
From Client side:
Socket socket = new Socket(); SocketAddress socketAddress = new InetSocketAddress(host, port); socket.connect(socketAddress, 12000); //12000 are milli seconds
From Server side:
ServerSocket serverSocket = new new ServerSocket(port); serverSocket.setSoTimeout(12000);