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     String sql;
     sql = "select * from login where username = ? and password = ?";
     conn=MySqlConnect.ConnectDB();
     try
     {
        pst = conn.prepareStatement(sql);
        pst.setString(1, txtusername.getText());
        pst.setString(2, txtpassword.getText());
        rs = pst.executeQuery();
        if (rs.next())
        {

            JOptionPane.showMessageDialog(null, "Username and Password correct");


enter code here

当我倾向于更改 getText() 时,它会在构建时引发错误

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