W/System.err: com.microsoft.sqlserver.jdbc.SQLServerException: The TCP/IP connection to the host vet-to-go.database.windows.net, port 1433 has failed. Error: "Connection timed out: no further information. Verify the connection properties. Make sure that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port. Make sure that TCP connections to the port are not blocked by a firewall.".

import java.sql.*;

public class DatabaseHelper {

public static void main(String[] args) throws Exception {
    String custID = "1";
    String connectionString = "jdbc:sqlserver://vet-to-go.database.windows.net:1433;database=Vet To Go DB;user=myLogin@vet-to-go;password=myPass;encrypt=true;trustServerCertificate=false;hostNameInCertificate=*.database.windows.net;loginTimeout=30;";
    String queryString = "SELECT FirstName, LastName FROM Tbl_Customer WHERE CustomerID = " + custID;

    Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
    Connection myConnection = DriverManager.getConnection(connectionString);
    Statement myStatement = myConnection.createStatement();
    ResultSet myResultSet = myStatement.executeQuery(queryString);

    myResultSet.next();
    String firstName = myResultSet.getString("FirstName");
    String lastName = myResultSet.getString("LastName");

    System.out.println(firstName);
    System.out.println(lastName);

    myStatement.close();
    myConnection.close();
}

}

import android.content.Context;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;

import java.sql.*;

public class LandingPage extends AppCompatActivity {

TextView txtFirst, txtLast;
String firstName, lastName, customerID;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_landing_page);
    txtFirst = (TextView)findViewById(R.id.txtFirstName);
    txtLast = (TextView)findViewById(R.id.txtLastName);

    customerID = getIntent().getStringExtra("custID");

    new myAsyncTask(LandingPage.this).execute();

    txtFirst.setText(firstName);
    txtLast.setText(lastName);
}

public class myAsyncTask extends AsyncTask<Void, Void, String> {
    String connectionString = "jdbc:sqlserver://vet-to-go.database.windows.net:1433;database=Vet To Go DB;user=myLogin@vet-to-go;password=myPass;encrypt=true;trustServerCertificate=false;hostNameInCertificate=*.database.windows.net;loginTimeout=30;";
    String queryString = "SELECT FirstName, LastName FROM Tbl_Customer WHERE CustomerID = " + customerID;
    Context context;


    public myAsyncTask(Context context) {
        System.out.println("Async instantiated.");
        this.context = context;
    }
    protected void onPreExecute() {
        System.out.println("Pre-executing Async task.");
    }

    protected String doInBackground(Void... params) {
        try {
            System.out.println("Attempting to connect to DB...");
            Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            Connection con = DriverManager.getConnection(connectionString);
            Statement st = con.createStatement();
            ResultSet rs = st.executeQuery(queryString);

            while (rs.next()) {
                System.out.println("Sorting through ResultSet...");
                firstName = rs.getString("FirstName");
                lastName = rs.getString("LastName");
            }

        } catch (SQLException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return "Complete";
    }

    protected void onPostExecute(String result) {
        if (result.equals("Complete")) {
            System.out.println("Async task complete.");
        }
    }
}
}

Connection con = DriverManager.getConnection(connectionString);

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    etID = (EditText)findViewById(R.id.etCustID);
    btnSubmit = (Button)findViewById(R.id.btnSubmit);

    btnSubmit.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            customerID = etID.getText().toString();
            myIntent = new Intent(MainActivity.this, LandingPage.class);
            myIntent.putExtra("custID", customerID);

            startActivity(myIntent);
        }
    });
}