Restrict TextBox number of input characters

Hi All,
I have a TextBox which I want to restrict to 4 input characters.
I can use textBox.setColumns(4); to make it display 4 characters in width for example. However it is still possible to enter many more characters.
I ideally want to only allow 4 characters to be entered. Once they attempt to enter a fifth, it shouldn't be possible.
Is there any easy way to implement this?
Thanks for your help.

Hello Please have a look at the rawTextProperty of TextControl extended by TextBox.
API Reference: http://download.oracle.com/javafx/2.0/api/javafx/scene/control/TextInputControl.html#rawTextProperty%28%29
Sample Code for limiting
final TextBox tbox = new TextBox();
final int limit = 4;
tbox.rawTextProperty().addListener(new InvalidationListener<String>(){
     @Override
        public void invalidated(ObservableValue<? extends String> ov) {
             String value = ov.getValue();
                if(value.length()>4)
                    tbox.rawTextProperty().set(value.substring(0,limit));
});Thanks.
Narayan

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Can I create a dynamic number of inputs during runtime?
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Welcome to the Oracle Forums !
>
Can I create a dynamic number of inputs during runtime?
Oracle 11g
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We have a table that holds metadata about files (hardcopy or softcopy files).
We expect we may need more columns in the table at some point and don't want to modify the table or the application.
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A second table will be called TBL_FILE_META with the columns:
TBL_META_ID NUMBER (This will be the primary key)
TBL_FILE_ID NUMBER (This will be the forign key to the file table)
TBL_META_COLUMN VARCHAR2(30) (This is what the column name would be if it existed in TBL_FILE)
TBL_META_VALUE VARCHAR2(1000) (This is the value that record and the 'would be' column)
So a person can have as much meta data on the file with out having to add columns to the table.
The problem is how can I allow users to add as much data as they like with out having to re develop the page.
>
Creating Page Items dynamically is not available. You will have to create excess items and hide/show , etc. But you cannot change the Item Type. All in all, too many limitations in this approach.
>
Other things to note is that we would like this to be on a single page.
>
The 100 item limit will hit you if you go with extra item on page. With Tabular Form that should not be a limitation, unless you are exceeding the 50 item limit of APEX_APPLICATION.G_Fnn items, and the 60 column limitation of Report region with "Use Generic Column Names (parse query at runtime only)" of Dynamic region.
>
I know how to add we can create multi-row inserts by using a SQL Query (updateable report),
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>
If the type if item is variable it only means you need a way to store the item type. Meta Data of the Meta Data.
>
So I don't see now a SQL Query (updateable report) would work for this and I can't create an array of page items at run time can I?
>
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>
Any idea's how I could accomplish this? Is there a better way of doing this?
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>
I guess that is just a good TNF. It is the Master-Detail Design Pattern, that sound more modern ? ;)
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Restrict TextBox number of input characters

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