Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
String host = "jdbc:sqlserver://<hostname>";
String username = "<username>";
String password = "<password>";
Connection conn = DriverManager.getConnection(host, username, password);
Statement st = conn.createStatement();
String SQL = 'INSERT INTO <table>(<column 1>, <column 2>, ... ) VALUES("'+tfHvT.getText()+'", "'+tfNS.getText()+'", "'+tfTdn.getText()+'", "'+tfMk.getText()+'") ';
st.executeUpdate(SQL);