java - Update Data in a MySQL Database -


i want update data, weight (2.150kg), in mysql database.

this code used in netbeans:

  connectdb();     try{          string value1 = txt_search_code.gettext();         string value2 = txt_item_code.gettext();         string value3 = txt_discription.gettext();         string value4 = txt_bin_balance.gettext();         string value5 = txt_date.gettext();         string value6 = txt_issued_quantaty.gettext();         string value7 = txt_issued_inno.gettext();         string value8 = txt_arrived_quantaty.gettext();         string value9 = txt_arrived_inno.gettext();         string value10 = txt_final_bin_balance.gettext();          string sql = "update tbl_codes set no='"+value1+"',item_code='"+value2+"',discription='"+value3+"',previous_bin_balance='"+value4+                      "',date='"+value5+"',issued_quantaty='"+value6+"',issued_invoice_no='"+value7+"',arrived_quantaty='"+value8+"',arrived_invoice_no='"+value9+"',final_bincard_balance='"+value10+"'where no='"+value1+"' ";         preparedstatement pstmt = con.preparestatement(sql);         pstmt.execute();         joptionpane.showmessagedialog(null, " new records updated succsessfully!!");      }catch(exception e){          joptionpane.showmessagedialog(null,e);     }      closedb();

this sql update statement:

select `tbl_stock`.`no`, `tbl_stock`.`item_code`, `tbl_stock`.`discription`, `tbl_stock`.`previous_bin_balance`, `tbl_stock`.`date`, `tbl_stock`.`issued_quantaty`, `tbl_stock`.`issued_invoice_no`, `tbl_stock`.`arrived_quantaty`, `tbl_stock`.`arrived_invoice_no`, `tbl_stock`.`final_bincard_balance` `db_biling`.`tbl_stock`;

how can update weight?

try use executeupdate() instead of execute(). code need refine lot. check sample code

string sql = "update tbl_codes set no= ?,item_code=?,discription=?,previous_bin_balance=?                     ,date=?,issued_quantaty=?,issued_invoice_no=?,arrived_quantaty=?,arrived_invoice_no=?,final_bincard_balance=? no=?"; preparedstatement pstmt = con.preparestatement(sql); pstmt.setstring(1, value1); pstmt.setstring(2, value2); pstmt.setstring(3, value3); pstmt.setstring(4, value4); pstmt.setstring(5, value5); pstmt.setstring(6, value6); pstmt.setstring(7, value7); pstmt.setstring(8, value8); pstmt.setstring(9, value9); pstmt.setstring(10, value10); pstmt.setstring(11, value1); pstmt.executeupdate();

if use preparedstatement, use ? instead of concatenating values sql, '"+value1+"'. using ? more clear , more secure.


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