Java – use jtextfield – cannot convert value to int
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Java
I want to start from JCombo@R_333_2419 @Get the selected value in, search for it in the database, and update the quantity in the database with the value in jtextfield This is the code:
Object selected = jCombo@R_333_2419@1.getSelectedItem(); String album = (String)selected; int qty=Integer.parseInt(jTextField7.getText()); String query2="update productlist set QtyAvail=? " + "where Album=?"; try { PreparedStatement ps2=con.prepareStatement(query2); ps2.setInt(1,qty); ps2.setString(2,album); int res1=ps2.executeUpdate(); } catch(Exception e) { e.printStackTrace(); }
I received this error:
Exception in thread "AWT-EventQueue-0" java.lang.NumberFormatException: For input string: " 1" at java.lang.NumberFormatException.forInputString(UnkNown Source) at java.lang.Integer.parseInt(UnkNown Source) at java.lang.Integer.parseInt(UnkNown Source) at AddProductPanel.jButton2ActionPerformed(AddProductPanel.java:341) at AddProductPanel.access$4(AddProductPanel.java:335) at AddProductPanel$5.actionPerformed(AddProductPanel.java:133)
I enter the value "1" in the text field
Solution
If there is a space in the string entered into parseint(), use trim()
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