;预计在java netbeans中，我该如何解决？

Question

Exptected

String sql= "INSERT INTO tbl_iklan VALUES ('"+txt_nama.getText()+"','"+txt_jenis.getText()+"','"+txt_warna.getText()"','"+txt_ukuran.getText()+"','"+txt_halaman.getText()+"')";

Answer 1

我怀疑，您在+串联中忘记了String。

替换

String sql= "INSERT INTO tbl_iklan VALUES ('"+txt_nama.getText()+"','"+txt_jenis.getText()+"','"+txt_warna.getText()"','"+txt_ukuran.getText()+"','"+txt_halaman.getText()+"')";

通过

String sql= "INSERT INTO tbl_iklan VALUES ('"+txt_nama.getText()+"','"+txt_jenis.getText()+"','"+txt_warna.getText() + "','"+txt_ukuran.getText()+"','"+txt_halaman.getText()+"')";