Re: TextField error checking

From: - ions (negative_ions_0_at_hotmail.com)
Date: 12/22/03

  • Next message: Anthony Borla: "Re: TextField error checking" 
    Date: 21 Dec 2003 23:14:06 -0800

    HGA03630@nifty.ne.jp (hiwa) wrote in message news:<6869384d.0312211700.26222d12@posting.google.com>...
    > negative_ions_0@hotmail.com (- ions) wrote in message news:<4799447d.0312210507.73cb102@posting.google.com>...
    > > I have created a JComboBox with its Items as a list of "M" numbers ie.
    > > M1,M2,M3.......throgh too M110 (thes are the messier objects, a
    > > catolouge of deep sky objects) the user selects of of these and views
    > > it aswell as infomation. The program also has a JTextFiels which
    > > allows the user to enter the M number. The problem i have is checking
    > > that what the user has entered is valid, that being an M followed by 1
    > > - 110 Nothing else, i thought of checking it against the items in the
    > > comboBox with itemAt() but i cudnt work out a way of looping through
    > > them, and using that within the if() Expression.... please help.
    > You can use InputVerifier extended class, or, more simply, you can do
    > the check in the ActionListener for the JTextField.

    Thats where my problem lies, im not sure how to acually do the
    checking (its proving harder than i thought it would). It will happen
    with the ActionEvent for a button. All i have at the moment is
    checking that the string starts with M, which is far from what i
    want...

    else if( !input_selection.startsWith("M")) //Not exaclly dummyproof
    {
      display error dialog message here....
    }

  • Next message: Anthony Borla: "Re: TextField error checking"