public boolean connect(String SQL) {
    String connectionUrl = "jdbc:sqlserver://localhost:2175;" +
     "databaseName=TestConnection;integratedSecurity=True;";
    Connection con = null;
    Statement stm = null;
    ResultSet rs = null;
    boolean check = false;
    try {
        Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
        con = DriverManager.getConnection(connectionUrl);
        stm = con.createStatement();
        if (SQL.contains("update") || SQL.contains("insert") || SQL.contains("delete") || SQL.contains("UPDATE") || SQL.contains("INSERT") || SQL.contains("DELETE")) {
            int clu = stm.executeUpdate(SQL);
            if (clu == 0)
                check = false;
            else
                check = true;
        }
        else {
            rs = stm.executeQuery(SQL);
            while (rs.next()) {
                System.out.println(rs.getString(1) + " | " + rs.getString(2));
                check = true;
            }
        }
    } catch (ClassNotFoundException | SQLException e) {
        e.printStackTrace();
    } finally {
        if (rs != null) try { rs.close(); } catch(Exception e) {}
        if (stm != null) try { stm.close(); } catch(Exception e) {}
        if (con != null) try { con.close(); } catch(Exception e) {}
    }

    return check;
}