Formatting a JTextField to a certain length with numbers only.

Hello,
What I want to is limit the user to a certain amount of numbers. If the user tries to exceeds the max length, i want it to beep and if they push anything but a number, i want it to beep :O
I got this to work for limitting the length using documents, but how can i make it so that only numbers are inputted also.
Thanks!

I got this to work for limitting the length using documents, but how can i make it so that only numbers are inputted also.If you don't like the way the JFormattedTextField works, then you need to add code to your custom Document make sure each character entered is a valid character. Simply loop through the input String and validate each character individiually.
Also, the new approach for this kind of customization is to use a DocumentFilter, not override the Document. The Swing tutorial on [url http://java.sun.com/docs/books/tutorial/uiswing/components/generaltext.html#filter]Text Component Features has an example of this.

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Can someone tell me why InsufficientBufferRule.as uses the "rtmpMetrics.netStream.bufferLength" as opposed to "rtmpMetrics.netStream.info.videoBufferLength"?
The reason I ask is because the "rtmpMetrics.netStream.bufferLength" returns 10 times(can grow to even more during transitions in quick succesion) what the actuall buffer length is when it switchs to a differnt stream. It will then continually drop until it starts returning the real buffer length(with my current bitrate(100, 300, 500) and bufferTime(10 seconds) setup, its takes about 20 seconds to get back to real buffer length). Durring this time the player is vulnerable to a buffer empty event because of the extremly high(and obviously wrong) buffer length being returned by "rtmpMetrics.netStream.bufferLength". Because of the incorrect buffer length being returned, the "if (_panic || (rtmpMetrics.netStream.bufferLength < minBufferLength && rtmpMetrics.netStream.bufferLength > rtmpMetrics.netStream.bufferTime))" statement never fires and hence the buffer drains completely without any warning.
I hate the stuttering buffer empty, buffer full, buffer empty, buffer full... crap that happens when this occurs so I've been debugging(more like hacking:)) this issue for quite some time. I tried many different things to try and avoid the buffering empty state. Most of my hacks have been done in the NetStreamSwitchManager file and I have had some limited success in avoiding the buffer empty state but ultimatly it would shows it ugly head no matter what I did.
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I included some browser logs that show what I am describing below. Any insight into this would be greatly appreciated.
100kbs to 300kbs
[LOG] time 10:44:15.967 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : bufferLength reporting Buffer of 10.102
[LOG] time 10:44:15.969 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : videoBufferLength reporting Buffer of 10.1
[LOG] time 10:44:16.517 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : bufferLength reporting Buffer of 9.901
[LOG] time 10:44:16.519 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : videoBufferLength reporting Buffer of 9.9
[LOG] time 10:44:17.49 :: org.osmf.net.rtmpstreaming::InsufficientBandwidthRule : -------Average bandwidth of 68955.72916666667
[LOG] time 10:44:17.50 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : bufferLength reporting Buffer of 9.981
[LOG] time 10:44:17.57 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : videoBufferLength reporting Buffer of 9.95
[LOG] time 10:44:17.549 :: org.osmf.net.rtmpstreaming::SufficientBandwidthRule : Move up since avg dropped FPS 0 < 2 and bufferLength > 10
[LOG] time 10:44:17.551 :: org.osmf.net.rtmpstreaming::SufficientBandwidthRule : getNewIndex() - about to return: 2, detail=null
[LOG] time 10:44:17.554 :: org.osmf.net.rtmpstreaming::InsufficientBandwidthRule : -------Average bandwidth of 68955.72916666667
[LOG] time 10:44:17.557 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : bufferLength reporting Buffer of 10.085
[LOG] time 10:44:17.560 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : videoBufferLength reporting Buffer of 10.05
[LOG] time 10:44:17.564 :: org.osmf.net::NetStreamSwitchManager : 10:44:17 GMT-0400>>> NetStreamSwitchManager.----------0
[LOG] time 10:44:17.567 :: org.osmf.net::NetStreamSwitchManager : 10:44:17 GMT-0400>>> NetStreamSwitchManager.checkRules() - Calling for switch to 1 at 300 kbps
[LOG] time 10:44:17.570 :: org.osmf.net::NetStreamSwitchManager : 10:44:17 GMT-0400>>> NetStreamSwitchManager.executeSwitch() - Switching to index 1 at 300 kbps
[LOG] time 10:44:18.165 :: org.osmf.net::NetStreamMetricsBase : onNetStatus() - event.info.code=NetStream.Play.Transition
[LOG] time 10:44:18.167 :: org.osmf.net::NetStreamSwitchManager : 10:44:18 GMT-0400>>> NetStreamSwitchManager.onNetStatus() - event.info.code=NetStream.Play.Transition
[LOG] time 10:44:18.599 :: org.osmf.net.rtmpstreaming::SufficientBandwidthRule : Move up since avg dropped FPS 0 < 2 and bufferLength > 10
[LOG] time 10:44:18.603 :: org.osmf.net.rtmpstreaming::SufficientBandwidthRule : getNewIndex() - about to return: 2, detail=null
[LOG] time 10:44:18.607 :: org.osmf.net.rtmpstreaming::InsufficientBandwidthRule : -------Average bandwidth of 68955.72916666667
[LOG] time 10:44:18.610 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : bufferLength reporting Buffer of 27.508
[LOG] time 10:44:18.612 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : videoBufferLength reporting Buffer of 10.1
[LOG] time 10:44:19.99 :: org.osmf.net.rtmpstreaming::SufficientBandwidthRule : Move up since avg dropped FPS 0 < 2 and bufferLength > 10
[LOG] time 10:44:19.101 :: org.osmf.net.rtmpstreaming::SufficientBandwidthRule : getNewIndex() - about to return: 2, detail=null
[LOG] time 10:44:19.105 :: org.osmf.net.rtmpstreaming::InsufficientBandwidthRule : -------Average bandwidth of 68955.72916666667
[LOG] time 10:44:19.108 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : bufferLength reporting Buffer of 27.008
[LOG] time 10:44:19.110 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : videoBufferLength reporting Buffer of 10
300kbs to 500kbs
[LOG] time 10:44:47.472 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : bufferLength reporting Buffer of 10.035
[LOG] time 10:44:47.480 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : videoBufferLength reporting Buffer of 10
[LOG] time 10:44:47.966 :: org.osmf.net.rtmpstreaming::SufficientBandwidthRule : Move up since avg dropped FPS 0 < 2 and bufferLength > 10
[LOG] time 10:44:47.968 :: org.osmf.net.rtmpstreaming::SufficientBandwidthRule : getNewIndex() - about to return: 2, detail=null
[LOG] time 10:44:47.970 :: org.osmf.net.rtmpstreaming::InsufficientBandwidthRule : -------Average bandwidth of 31764.322916666668
[LOG] time 10:44:47.972 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : bufferLength reporting Buffer of 10.135
[LOG] time 10:44:47.976 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : videoBufferLength reporting Buffer of 10.1
[LOG] time 10:44:47.981 :: org.osmf.net::NetStreamSwitchManager : 10:44:47 GMT-0400>>> NetStreamSwitchManager.----------1
[LOG] time 10:44:47.986 :: org.osmf.net::NetStreamSwitchManager : 10:44:47 GMT-0400>>> NetStreamSwitchManager.checkRules() - Calling for switch to 2 at 500 kbps
[LOG] time 10:44:47.989 :: org.osmf.net::NetStreamSwitchManager : 10:44:47 GMT-0400>>> NetStreamSwitchManager.executeSwitch() - Switching to index 2 at 500 kbps
[LOG] time 10:44:48.308 :: org.osmf.net::NetStreamMetricsBase : onNetStatus() - event.info.code=NetStream.Play.Transition
[LOG] time 10:44:48.309 :: org.osmf.net::NetStreamSwitchManager : 10:44:48 GMT-0400>>> NetStreamSwitchManager.onNetStatus() - event.info.code=NetStream.Play.Transition
[LOG] time 10:44:48.465 :: org.osmf.net.rtmpstreaming::InsufficientBandwidthRule : -------Average bandwidth of 23247.514204545456
[LOG] time 10:44:48.467 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : bufferLength reporting Buffer of 40
[LOG] time 10:44:48.469 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : videoBufferLength reporting Buffer of 10
[LOG] time 10:44:48.966 :: org.osmf.net.rtmpstreaming::InsufficientBandwidthRule : -------Average bandwidth of 17793.34677419355
[LOG] time 10:44:48.967 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : bufferLength reporting Buffer of 39.5
[LOG] time 10:44:48.970 :: org.osmf.net.rtmpstreaming::InsufficientBufferRule : videoBufferLength reporting Buffer of 9.9
Thanks,
Wayne
P.S. While wrighting this I realized I need to replace the second part of that if statement to the videoBufferLength as well, so I will do that and make sure it still works. If I don't reply to this you can assume that it works as well.

Wow I'm starting to get a little confused here. I need to mention that in my first post I said that I changed/used
"if (_panic || (rtmpMetrics.netStream.bufferLength < minBufferLength && rtmpMetrics.netStream.bufferLength > rtmpMetrics.netStream.bufferTime))".
That was not the truth, I had actually shortened that statement in one of my earlier hack attempts, not really giving it to much thought at the time. The statement that I ended up changing/using was more like
"if (_panic || rtmpMetrics.netStream.bufferLength < minBufferLength)" changed to "if (_panic || rtmpMetrics.netStream.info.videoBufferLength < minBufferLength)".
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"if (_panic || (rtmpMetrics.netStream.bufferLength < minBufferLength && rtmpMetrics.netStream.bufferLength > rtmpMetrics.netStream.bufferTime))"
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if the bufferLength(no matter which one you use) is less than minBufferLength(9) how is ever going to be greater than bufferTime(10)?
fyi:
if I change the statement
"if (_panic || (rtmpMetrics.netStream.bufferLength < minBufferLength && rtmpMetrics.netStream.bufferLength > rtmpMetrics.netStream.bufferTime))"
to
"if (_panic || (rtmpMetrics.netStream.info.videoBufferLength < minBufferLength && rtmpMetrics.netStream.info.videoBufferLength < rtmpMetrics.netStream.bufferTime))"
it works like a dream again.
Thanks again,
Wayne
P.S. I noticed that there are other places such as SufficientBandwidthRule.as that are referencing rtmpMetrics.netStream.bufferLength. I plan on going through the code and changing these and see how it works. I'm starting to wonder what else could be written like this or am I crazy?

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