java-MyEclipse执行成功，但mysql没有数据。

    Class.forName("com.mysql.jdbc.Driver");        ct=DriverManager.getConnection("jdbc:mysql://localhost:3306/test1","root","wenhao");        sm=ct.createStatement();        rs=sm.executeQuery("select *from test");        try {        ps=ct.prepareStatement("insert test values(14,'aaa')");        System.out.print("插入成功");        } catch (Exception e) {            // TODO Auto-generated catch block            System.out.print("插入失败");        }