documentfilter

How do I receive input from a textbox in a JFrame?

由 天涯浪子 提交于 2019-12-13 17:26:59
问题 The following method extends a JFrame, but I need a swing textbox inside it to receive double values and store them in a variable. the textbox must be added to the container. public class myClass extends JFrame{ Container container; container = getContentPane(); //Item label JLabel labelText = new JLabel(); ... labelText.setText ("Item:"); container.add( labelText ); //Item name: Textbox //code to make a textbox, add it to the container, and store the value in a variable goes here 回答1: Use a

Tabs, newlines, DocumentFilters and eclipse text

由 女生的网名这么多〃 提交于 2019-12-13 03:39:05
问题 So, I have an additional issue regarding THIS question. Once I apply the fix, go to notepad, typeout bunch of tabs and newlines with some random characters and then paste them into my program, it all works peachy. However, being the closest text with bunch of tabs and newlines, I tried pasting a part the code itself to the JTextArea. All tabs and newlines stuck there and weren't filtered out. Although my users probably won't paste eclipse code into my program , I can't be sure that eclipse

set jtextfield textlimit and uppercase at same time

由 房东的猫 提交于 2019-12-11 13:59:27
问题 I Have a couple jtextfield in my app and I want to put one of them that allow upper and lowcase and also put the limit of number of character that can be introduce into the jtextfield. I have to separe class, one to put the limit and the other to put the upper or lowcase. code to the limit of jtextfield: package tester; import javax.swing.text.AttributeSet; import javax.swing.text.BadLocationException; import javax.swing.text.PlainDocument; public class TextLimiter extends PlainDocument {

How to set a Maximum and Minimum value that can be entered in a Jformattedtextfield , using DocumentFilter?

由 ≡放荡痞女 提交于 2019-12-11 09:27:26
问题 I am newbie to Java programming. I have a document filter that only allow numeric values and decimals with "." in a JFormattedTextField . Now I want to implement a method within that filter, to only allow a maximum and minimum value , like I want whatever the value of number entered, it must be between [0-1], otherwise it should not accept whatever is typed. Now I don't want to use JSpinner , because from 0 to 1 there is millions of Decimals eg: 0.0001, 0.0012 ... This is my documentFilter

Filtering a JTextField for strings, space and a dot (.) using a DocumentFilter

由 烈酒焚心 提交于 2019-12-11 08:59:05
问题 I have a JTexTField that I would want a user to enter the name of a person. I have figured that the name should contain [a-zA-Z] , . and space example Mr. Bill . I am using a DocumentFilter to validate user input.However, I cannot figure out how should I set this within my DocumentFilter . Question: How should I modify my filter to achieve the above behavior? Any suggestion on how to validate a person's name is accepted. Here is my DocumentFilter: public class NameValidator extends

JFormattedTextField destroys DocumentFilter

由 余生长醉 提交于 2019-12-10 23:40:12
问题 I have a Problem with the JFormattedTextField (I use it as a base class for all of our text fields). Today I tried to add a document filter to the document of this field which works just fine, but only as long it doesnt have a formatter factory set. The Problem is, when the formatter factory is set (in my case the default classes) and processFocusEvent is called following happens (JFormattedTextField.java:595): // if there is a composed text, process it first if ((ic != null) &&

Filtering out tab character with documentFilter

由 跟風遠走 提交于 2019-12-10 22:19:03
问题 So, I have a program with JTextArea with DocumentFilter. It should (among other things) filter out tab characters and prevent them to be entered in the JTextArea completely. Well, it works well when I type, but I can still paste it in. i shouldn't be able to, according to the code... Below is kind of a SSCCE. Just run it, press ctrl+n and enter. All the colored fileds are JTextAreas with same DocumentFilter. The filter itself is the first class (DefaultDocFilter), only thing you need to look

CellEditor with DocumentFilter never get called

由 给你一囗甜甜゛ 提交于 2019-12-06 11:11:56
I can't get this CellEditor with a DocumentFilter to work as i want. When i typed in the only editable column, insertString from PlainDocument is never called and documentFilter neither. I think im not overriding something correctly but i can't figured out. I made this Minimal, Complete, Tested and Readable example //TODO include imports public class Test { private static final int EDITABLE_COLUMN = 1; private final TableCellEditor cellEditor; private final JTextField textfield; private final PlainDocument document; private JPanel panel; private MyTableModel tableModel = new MyTableModel();

JTextArea Filters and/or Inputs of time (00:00:00) Java

由 只谈情不闲聊 提交于 2019-12-04 06:43:42
问题 There's a section of my program where the user should have the ability to edit an amount of time. There will be a default amount of time already set but the user should be able to edit it if need be (00:00:00) Would a single line JTextArea with limitations on what characters can be entered (only numbers obviously) and some kind of filter to not allow the colons to be edited be the way to go? Or is there something more simple? 回答1: So, dealing with duration is a lot different, as many of the

Force JTextField to string value while DocumentFilter only allows digits

由 让人想犯罪 __ 提交于 2019-12-02 17:01:14
问题 I'm working on a Java application and ran into a problem that I cannot seem to solve on my own. I've set a DocumentFilter on JTextField to only allow digit entries, however, the default values are text. I have a button that resets JTextField s back to default, and it is not working presumingly because of the DocumentFilter . How can I overcome this problem? Thanks 回答1: A field that the user can only enter numeric data into, but also needs to display non-numeric values is contradictive. Text
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