jformattedtextfield

What is a simple way to create a text field (or such) that only allows the user to enter ints/doubles in Java?

喜你入骨 提交于 2019-11-28 10:36:35
问题 I am looking for a way to ensure that my text field (JTextField, JFormattedTextField) is returning a double or int rather than a string when I call .getText(). What is the best way to do this (if possible)? Thanks! badPanda :D 回答1: Register InputVerifier and call method getValue from JFormattedTextField public class FormattedTextFieldVerifier extends InputVerifier { public boolean verify(JComponent input) { if (input instanceof JFormattedTextField) { JFormattedTextField ftf =

Why is JFormattedTextField evil? [closed]

筅森魡賤 提交于 2019-11-28 08:19:44
In this question Is there any way to accept only numeric values in a JTextField? one of the answers suggested that JFormattedTextField had issues. I've not yet used it, but could somebody please expand (or disagree) on the issues with this class? JFormattedTextField is evil because of poor usability. For instance, if a text field should only be able to accept an integer value, JFormattedTextField will allow any old rubbish and then complain when focus is lost. To make matters worse, it has a range of configurable behaviours when focus is lost (a clear sign that none of them is the correct

JFormattedTextField for Double still takes characters [duplicate]

六月ゝ 毕业季﹏ 提交于 2019-11-28 02:11:39
This question already has an answer here: Is there any way to accept only numeric values in a JTextField? 19 answers I have a JFormattedTextField where the user would input prices, I have this, but if I type a character, it'll let me anyway. I need this text field to only read numbers or , from the keyboard, and ignore if it's a char. How should I change it in order to make it work? JFormattedTextField formattedTextField = new JFormattedTextField(); formattedTextField.setBounds(25, 330, 56, 20); contentPanel.add(formattedTextField); formattedTextField.setValue(new Double(10.0)); You need to

jFormattedTextField's Formatter.setCommitsOnValidEdit(true) doesn't work at first focus

六月ゝ 毕业季﹏ 提交于 2019-11-27 09:35:14
I have a jFormattedTextField and I set setCommitsOnValidEdit to true then I added an event listener to "property change" on "value" property. At first focus of that jFormattedTextField it doesn't call event listener method when typing in it. But on "focusLost" it calls event listener and after that when it receives focus again it calls event listener when typing. I want the event listener be called after any change in any time in that jFormattedTextField (Even in the fist focus). What's the problem? How can I fix it? probably you have to look at DocumentListener example here EDIT: I know this

Make JSpinner only read numbers but also detect backspace

三世轮回 提交于 2019-11-27 09:34:28
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) spinner.getEditor()).getTextField(); ((NumberFormatter) txt.getFormatter()).setAllowsInvalid(false);

FocusEvent doesn't get the last value of JFormattedTextField, How I can get it?

最后都变了- 提交于 2019-11-27 09:29:47
I have two JFormattedTextField objects on my JFrame object. I want a basic Math (addition) by the values of these JFormattedTextField objects. I want it happen when focus lost either the first or the second textfield. But when " focusLost() ", event doesn't get the last value, it gets the previous value. For example; tf1 has 0 and tf2 has 0 at first. I write 2 to tf1 , and when focusLost() , result ( tf1+tf2 ) become still 0. when I change any of them, the result becomes 2 (the previous value) How do I get the last values on focusLost? Here is my code: JFormattedTextField tf1,tf2; NumberFormat

Make a JFormattedTextField behave like ATM input

青春壹個敷衍的年華 提交于 2019-11-27 07:28:34
问题 I would like to know if there is anyway to make a JformattedTextField or jtextField behave like an atm money input. With that I mean you enter from the right to left, say you enter 10 you need to press 2 more 0's so that it will be 10.00 . The program enters the decimal point automatically as he types from right to left? If the 2 0's are not entered it will just be .10 . Is this possible? How would that be returned to me if I want to use that string to do calculations on then? I tried the

JFormattedTextField for Double still takes characters [duplicate]

落爺英雄遲暮 提交于 2019-11-27 04:53:36
问题 This question already has answers here : Is there any way to accept only numeric values in a JTextField? (19 answers) Closed 6 years ago . I have a JFormattedTextField where the user would input prices, I have this, but if I type a character, it'll let me anyway. I need this text field to only read numbers or , from the keyboard, and ignore if it's a char. How should I change it in order to make it work? JFormattedTextField formattedTextField = new JFormattedTextField(); formattedTextField

How to rendering fraction in Swing JComponents

房东的猫 提交于 2019-11-27 02:14:14
Basically Swing JComponents are able to display numbers in fractions in this form 2 2/3 . How can I paint fraction in the nicest form, for example 2⅔? . EDIT . as see I have only one way JTable inside JSpinner with one TableColumn and TableRow (that could simulated plain JtextField too), where TableRenderer could be some of JTextComponent formatted by using Html and on TableCellEdit event the TableEditor to swith to the plain JFormattedTextField , is there another way, could it be possible with plain J(Formatted)TextField too ??? trashgod On reflection, Unicode fractions among the Latin-1

Java : JFormattedTextField saving numbers

有些话、适合烂在心里 提交于 2019-11-26 21:07:00
In my application I want to input numbers (amounts) to a specific limit, and hence have used JFormattedTextField. Limit like "12345678.99" i.e. 8 digits before "." and 2 after "." or so on. This is my implementation code, but it doesn't result as expected. startBalTxt.setFormatterFactory(new javax.swing.text.DefaultFormatterFactory(new javax.swing.text.NumberFormatter(new java.text.DecimalFormat("########.##")))); startBalTxt.setText(resourceMap.getString("startBalTxt.text")); // NOI18N startBalTxt.setFont(Utility.getTextFont()); startBalTxt.setName("startBalTxt"); // NOI18N INPUT RESULT