jformattedtextfield

问题 I have the estimated time the it would take for a particular task in minutes in a float. How can I put this in a JFormattedTextField in the format of HH:mm:ss ? 回答1: JFormattedTextField accepts a Format object - you could thus pass a DateFormat that you get by calling DateFormat#getTimeInstance(). You might also use a SimpleDateFormat with HH:mm:ss as the format string. See also: http://download.oracle.com/javase/tutorial/uiswing/components/formattedtextfield.html#format If you're not

问题 I have a JFormattedTextField that should be able to accept double numbers with more than 3 decimal digits. It accepts entries 0.1 , 0.01 , 0.001 but rejects 0.0001 and numbers with more decimal digits. This is how my code works now: DecimalFormat decimalFormat = new DecimalFormat("0.0E0"); JFormattedTextField txtfield = new JFormattedTextField(decimalFormat.getNumberInstance(Locale.getDefault())); How do I get my text field to accept numbers with more than 3 decimal digits? 回答1: It accepts

问题 I have multiple places where I convert between one coordinate system and another. In each case there is a cosine/sine calculation between, let's call them x, y and x', y'. These are all JFormattedTextFields. If the user enters a value in any of the 4, an ActionListener is called. Lets call the fields fieldx, fieldy, fieldx1, and fieldy1. If the user enters anything in fieldx or fieldy, I HAD keyboard and focus listeners (the same one for all four fields) that would update fieldx1 and fieldy1

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 8 years ago . In this question Is there any way to accept only numeric values in a JTextField? one of the answers suggested that JFormattedTextField

问题 I'm trying to make a JSpinner that will only accepts numbers but I also want it to read/respond to backspace. public class test { JFrame frame; JPanel panel; JSpinner spinner; public test() { frame = new JFrame("test"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setPreferredSize(new Dimension(200,200)); panel = new JPanel(); SpinnerNumberModel numSpin = new SpinnerNumberModel(10, 0,1000,1); spinner = new JSpinner(numSpin); JFormattedTextField txt = ((JSpinner.NumberEditor)

问题 I'm trying to make a JSpinner that will only accepts numbers but I also want it to read/respond to backspace. public class test { JFrame frame; JPanel panel; JSpinner spinner; public test() { frame = new JFrame("test"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setPreferredSize(new Dimension(200,200)); panel = new JPanel(); SpinnerNumberModel numSpin = new SpinnerNumberModel(10, 0,1000,1); spinner = new JSpinner(numSpin); JFormattedTextField txt = ((JSpinner.NumberEditor)

问题 I got some troubles using time in my code: txtDauer = new JFormattedTextField(); txtDauer.setFormatterFactory(new DefaultFormatterFactory( new DateFormatter(DateFormat.getTimeInstance()))); When I use setValue(0) to the above FormattedTextfield the textfield shows 01:00:00 instead of 00:00:00. The same problem occurs also at another line of the code with this method: public static String convertLongToString(Long time) { String strtime = new SimpleDateFormat("HH:mm:ss").format(time); return

问题 Here is the code, I am hoping that this will add the constraint that only integer input is valid for the text field: JFormattedTextField ftf = new JFormattedTextField (); NumberFormat format = NumberFormat.getNumberInstance(); format.setParseIntegerOnly(true); ftf.setFormatterFactory(new DefaultFormatterFactory(new NumberFormatter(format), new NumberFormatter(format), new NumberFormatter(format))); But what suprised me is that when I input 100aaa, it is valid, 100.111, it is valid too. how

问题 I have the following JFormattedTextField try { MaskFormatter CabinNoTextF = new MaskFormatter("###"); CabinNoTextF.setPlaceholderCharacter(' '); CabinNoTextField = new JFormattedTextField(CabinNoTextF); centerPanelCabin.add(CabinNoTextField); addCabinF.add(centerPanelCabin); addCabinF.setVisible(true); } catch (Exception ex) { } CabinNoTextField is formatted to only allow three digits to be inputted within the text field. However, I want it so that the user can also enter a single digit as

问题 I have a string which is say "AAAABB". I have a JFormattedField of MaskFormatter . so I have ? ? ? ? ? ? in my Frame. I have two buttons A and B. when the user presses A button, the JFormattedField of the MaskFormatter should replace ? with Letter A for all occurrences of A. i.e, index 0,1,2,3 in this example. I have my code that gets the list of indices to be replaced with A. But I am having difficulty in implementing setLetter(String Letter, int Position) method, that takes letter and