How do i read in keyboard input
This must be one of the most simple things to do but i cant find an example or any info any where i thought i could use readLine but this seems to be for reading in a file line. I just want to read in whatever a user enters at a prompt
Thanks
import java.io.*;
class Queue{
public static void main (String args[])
throws Exception {
System.out.println("Enter a number ");
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int i = Integer.parseInt(br.readLine().trim());
System.out.println("You have entered "+i);
Similar Messages
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How can I read Extended APDU input to the same buffer
The following is the code I am currently using where inBuffer is an intermediate array of 1000 length. However, I do not want to allocate any buffers at all, and just want to send a command apdu of 1000 byte length and modify it in the code and return the modified buf in the response APDU.
// Read extended APDU input
byte[] buf = apdu.getBuffer();
short bytesRead = apdu.setIncomingAndReceive();
short dataOffset = apdu.getOffsetCdata();
// store first chunk in our intermediate byte array <-- how do i get rid of the intermediate array
Util.arrayCopyNonAtomic(buf, dataOffset, inBuffer, (short) 0, bytesRead);
// what is the overall length?
short overallLength = apdu.getIncomingLength();
short messageOffset = bytesRead;
if (bytesRead != overallLength){ // otherwise we're finished, all bytes received
short received = 0;
do{
received = apdu.receiveBytes((short)0);
Util.arrayCopyNonAtomic(buf, (short)0, inBuffer, messageOffset, received);
messageOffset += received;
} while(received != 0);
* REST OF CODE IN PROCESS METHOD
I have also tried replacing the above code with the following
short bytesLeft = (short) (buffer[ISO7816.OFFSET_LC] & 0x00FF);
if (bytesLeft < (short)55) ISOException.throwIt( ISO7816.SW_WRONG_LENGTH );
short readCount = apdu.setIncomingAndReceive();
while ( bytesLeft > 0){
// process bytes in buffer[5] to buffer[readCount+4];
bytesLeft -= readCount;
readCount = apdu.receiveBytes ( ISO7816.OFFSET_CDATA );
as shown in the javadocs API, but it does not compile.
This is my command APDU:
/send 800100000003E8000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000003E8
As you can see:
CLA - 80
INS - 01
P1 & P2 - 00
LC - 0003E8
Data - 1000 0s
LE - 03E8
I am using JavaCard 3.0 with JCOP in Eclipse. How can I read the extended length apdu to the same buffer? I have no problem in returning an extended length response APDU. Thanks a lot for the help.You should not call the convenience method setIncomingAndReceive() in your first code. Please find out about the different APDU states. Furthermore, your Applet should implement the ExtendedLength tagging interface.
-
Simple Question: How do I read from keyboard?
How do I read characters or integers from the keyboard?
InputStream with try/catch?
Can someone write code to show me how?play with this a little...
it has the basics,
best i can do right now...
import java.io.* ;
import Car ;
class MilesPerGallon
public static void main( String[] args )
throws IOException
BufferedReader userIn =
new BufferedReader(
new InputStreamReader( System.in ) );
String line;
int startMiles, endMiles;
double gallons;
System.out.println("Enter first reading:" );
line = userIn.readLine();
startMiles = Integer.parseInt( line );
System.out.println("Enter second reading:" );
line = userIn.readLine();
endMiles = Integer.parseInt( line );
System.out.println("Enter gallons:" );
line = userIn.readLine();
gallons = Integer.parseInt( line );
Car car = new Car(
startMiles, endMiles, gallons );
System.out.println( "Miles per gallon is "
+ car.calculateMPG() );
} -
How do I read a pulsed input on an SCB-68 counter channel?
Hello all, I have been searching through the DAQ help and this board
for a few hours now and I cannot find an answer that addresses what
should be a simple problem. Let's start with hardware and software: I
have a 6062E PCMCIA DAQmx card connected to a SCB-68 (E Series)
connector block. I am running Version 7.1.0.306 of Measurement Studio
for Visual Studio .NET and am coding in C#. So please, no LabView
answers.
I am trying to read the pulsed output of the Omega HHT-1501 Digital
Tachometer - it outputs a TTL LOW pulse every time the sensor is
triggered, I would like to read in these pulses and get the
frequency to determine RPMs. As far as I can tell I need to
connect the pulsed signal line to CTR0, which is PFI9/GPCTR0_GATE on
the connector block, pin #3. I have verified that the tachometer is
indeed pulsing correctly. I have used the DAQ Assistant to create a
DAQmx task to acquire the frequency of a digital signal using the 1
Counter Low Frequency Measurement method, input range is set from 1Hz
to 1KHz, starting edge is set to falling. For Task Timing the
Acquisition Mode is Continuous, Samples to Read = 100.
When I run the test I get no response. And it also seems that the
GPCTR0_GATE is always at +5V. I have tried just about every other
combination of inputs, including using CTR1 on GPCTR1_GATE, pin 41, all
with the same result - no signal read.
So what is the problem? Every post or help article I have read makes it
sound like plug and play to read the pulses but this is not the case -
does the counter gate need to be configured as an input in either
software or hardware? Am I supposed to have a signal set on the SOURCE,
and if so what? And what about my ground line from the pulse source? I
have tried attachign that to DGND, still no result, and if I attach the
pulse signal gnd to the GPCTR0_SOURCE it causes my tachometer to lock
up.
This thread
http://forums.ni.com/ni/board/message?board.id=170&message.id=34826&query.id=3937#M34826
seems to be very closely related to what I want to do but is as vague
as the help articles - it mentions using one of the two timebases as
the source input - what does this mean in terms of code/wiring?
Additionally in the NI-DAQmx help article under Device
Considerations->Counter Signal Connections->AO/E/S Series it says
"The count direction terminal must be tristated to use an external
signal. Reset the device to ensure the terminal is tristated" for edge
counting. A) Is this related? and B) how does one tristate by reset?
Power cycling the scb-68 has no apparent effect on anything.
I would appreciate any help on this matter, hopefully with as much
detail as possible since the help manuals seem to be mostly useless for
guiding one in performing any task.
Thanks!
J. SlaterHi Shyam,
The major factor that would come into play with the signal having some noise is that the counter is expecting a TTL signal and the oscilloscope is measuring an analog input signal. If your signal floats above the TTL thresholds or does not rise/fall within the specifications, the behavior is not predictable and it can be measured as a high or low by the counter. An oscilloscope will measure the analog signal and you may be able to measure the frequency of the noise on your scope by analyzing a smaller timeframe of the signal.
What Is the Definition of a TTL (Transistor-Transistor Logic) Compatible Signal?
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/acb4bd7550c4374c86256bfb0067a4bd
Steve B -
How do u get multiple keyboard input?
is there a easy way to do this?
for ex: while pressing the right key to move a sprite i press the space bar to make it jumpYou could have some booleans that keep track of which buttons have been pressed. For example:
boolean rightArrowIsPressed = false;
boolean spaceBarIsPressed = false;You can set them to true in the keyPressed method, then false in the keyReleased method. Does that make sense? -
How to read 2 analog inputs with VISA
Hello everyone! I want to read two analog inputs using VISA serial communication from the arduino. I'm currently able to read one of the input but how do I read two analog inputs on labview?
Hi lamela,
again I have to ask: HOW does the string look like? Is it so hard to provide an exact example of your received string???
I think the string is showing one value from the two inputs
Are you sure or are you guessing? How can we tell what you might "think" when you aren't able to provide examples?
You wrote you send values from the Arduino using the command "println(value1, value2)", but now you "think" you only receive ""value1" in LabVIEW?
Get your data communications clear! (And learn to provide meaningful examples!)
Edit after your edit:
my code to serial print two inputs: Serial.println(Voltage, Current);
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Serial.println(Current);
The first command is completely different then the second part! In the first you should receive two values in one line, in the 2nd one you receive one value per line: You need to adapt your string parsing to these strings!
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Help: How can I read an integer from keyboard
Hi,
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7biscuits wrote:
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7biscuits wrote:
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This is needed for the app im working on. Need some user input via keypad as well as scanner input via a paired bluetooth scanner.You probably should not be using a keyboard bluetooth profile for a scanner, I am not a developer for apple so do not know the location for you to find out the correct profile you should be using for an input device that is not a keyboard. Sorry,
I am sure if you navigate the apple developer site you will probaly finmd what you're looking for.
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How to enter text in text input box using virtual keyboard in flex application
Re: how to enter text in text input box using virtual keyboard in flex application
hi,
im using flash builder 4,
i designed virtual keyboard, i have to update the text in text input box continously by using virtual keyboard.
i used button events.i did some mistake there.
can some one help me out of tat.
thanks in advance.
i have included my mxml program with this.
virtualkeyboard.mxml
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600" creationComplete="initfunc()">
<fx:Script>
<![CDATA[
import mx.controls.Alert;
private function initfunc():void
b1.addEventListener(MouseEvent.CLICK,handleEvent);
b2.addEventListener(MouseEvent.CLICK,handleEvent);
b3.addEventListener(MouseEvent.CLICK,handleEvent);
b4.addEventListener(MouseEvent.CLICK,handleEvent);
b5.addEventListener(MouseEvent.CLICK,handleEvent);
b6.addEventListener(MouseEvent.CLICK,handleEvent);
b7.addEventListener(MouseEvent.CLICK,handleEvent);
b8.addEventListener(MouseEvent.CLICK,handleEvent);
b9.addEventListener(MouseEvent.CLICK,handleEvent);
b10.addEventListener(MouseEvent.CLICK,handleEvent);
b11.addEventListener(MouseEvent.CLICK,handleEvent);
b12.addEventListener(MouseEvent.CLICK,handleEvent);
b13.addEventListener(MouseEvent.CLICK,handleEvent);
b14.addEventListener(MouseEvent.CLICK,handleEvent);
b15.addEventListener(MouseEvent.CLICK,handleEvent);
b16.addEventListener(MouseEvent.CLICK,handleEvent);
b17.addEventListener(MouseEvent.CLICK,handleEvent);
b18.addEventListener(MouseEvent.CLICK,handleEvent);
b19.addEventListener(MouseEvent.CLICK,handleEvent);
b20.addEventListener(MouseEvent.CLICK,handleEvent);
b21.addEventListener(MouseEvent.CLICK,handleEvent);
b22.addEventListener(MouseEvent.CLICK,handleEvent);
b23.addEventListener(MouseEvent.CLICK,handleEvent);
b24.addEventListener(MouseEvent.CLICK,handleEvent);
b25.addEventListener(MouseEvent.CLICK,handleEvent);
b26.addEventListener(MouseEvent.CLICK,handleEvent);
b27.addEventListener(MouseEvent.CLICK,handleEvent);
b28.addEventListener(MouseEvent.CLICK,handleEvent);
b29.addEventListener(MouseEvent.CLICK,handleEvent);
b30.addEventListener(MouseEvent.CLICK,handleEvent);
b31.addEventListener(MouseEvent.CLICK,handleEvent);
b32.addEventListener(MouseEvent.CLICK,handleEvent);
b33.addEventListener(MouseEvent.CLICK,handleEvent);
b34.addEventListener(MouseEvent.CLICK,handleEvent);
b35.addEventListener(MouseEvent.CLICK,handleEvent);
b36.addEventListener(MouseEvent.CLICK,handleEvent);
b37.addEventListener(MouseEvent.CLICK,handleEvent);
b38.addEventListener(MouseEvent.CLICK,handleEvent);
b39.addEventListener(MouseEvent.CLICK,handleEvent);
b40.addEventListener(MouseEvent.CLICK,handleEvent);
b41.addEventListener(MouseEvent.CLICK,handleEvent);
b42.addEventListener(MouseEvent.CLICK,handleEvent);
b43.addEventListener(MouseEvent.CLICK,handleEvent);
b44.addEventListener(MouseEvent.CLICK,handleEvent);
b45.addEventListener(MouseEvent.CLICK,handleEvent);
b46.addEventListener(MouseEvent.CLICK,handleEvent);
b47.addEventListener(MouseEvent.CLICK,handleEvent);
b48.addEventListener(MouseEvent.CLICK,handleEvent);
b49.addEventListener(MouseEvent.CLICK,handleEvent);
b50.addEventListener(MouseEvent.CLICK,handleEvent);
b51.addEventListener(MouseEvent.CLICK,handleEvent);
b52.addEventListener(MouseEvent.CLICK,handleEvent);
b53.addEventListener(MouseEvent.CLICK,handleEvent);
public function handleEvent ( e : MouseEvent ) : void
var a:String= e.target.name ;
Alert.show(e.target.name);
var b:String=null;
switch(a)
case "Button20":
b=textbox.text;
//textbox.text="a";
textbox.text=b+"a";
break;
case "Button21":
//textbox.text="b";
textbox.text=b+"b";
break;
default:
//textbox.text="s";
textbox.text=b+"s";
]]>
</fx:Script>
<s:Panel x="43" y="82" width="527" height="213">
<mx:Button x="71" y="86" id="b1" label="1" width="30" height="24"/>
<s:Button x="180" y="86" id="b2" label="5" width="30" height="24"/>
<s:Button x="127" y="86" id="b3" label="3" width="30" height="24"/>
<s:Button x="99" y="86" id="b4" label="2" width="30" height="24"/>
<s:Button x="323" y="86" id="b5" label="0" width="30" height="24"/>
<s:Button x="294" y="86" id="b6" label="9" width="30" height="24"/>
<s:Button x="265" y="86" id="b7" label="8" width="30" height="24"/>
<s:Button x="237" y="86" id="b8" label="7" width="30" height="24"/>
<s:Button x="209" y="86" id="b9" label="6" width="30" height="24"/>
<s:Button x="42" y="86" id="b10" label="`" width="30" height="24"/>
<s:Button x="382" y="86" id="b11" label="=" width="30" height="24"/>
<s:Button x="353" y="86" id="b12" label="-" width="30" height="24"/>
<s:Button x="410" y="86" id="b13" label="back" width="76" height="24"/>
<s:Button x="157" y="86" id="b14" label="4" width="30" height="24"/>
<s:Button x="43" y="109" id="b15" label="tab" width="66" height="24"/>
<s:Button x="105" y="109" id="b16" label="q" width="31" height="24"/>
<s:Button x="247" y="109" id="b17" label="y" width="30" height="24"/>
<s:Button x="303" y="109" id="b18" label="i" width="31" height="24"/>
<s:Button x="361" y="110" id="b19" label="p" width="34" height="23"/>
<s:Button x="394" y="109" id="b20" label="[" width="31" height="24"/>
<s:Button x="191" y="109" id="b21" label="r" width="34" height="24"/>
<s:Button x="424" y="109" id="b22" label="]" width="31" height="24"/>
<s:Button x="222" y="109" id="b23" label="t" width="31" height="24"/>
<s:Button x="161" y="109" id="b24" label="e" width="31" height="24"/>
<s:Button x="133" y="109" id="b25" label="w" width="31" height="24"/>
<s:Button x="332" y="109" id="b26" label="o" width="31" height="24"/>
<s:Button x="275" y="109" id="b27" label="u" width="31" height="24"/>
<s:Button x="220" y="133" id="b28" label="g" width="31" height="24"/>
<s:Button x="424" y="132" id="b29" label="enter" width="62" height="24"/>
<s:Button x="43" y="132" id="b30" label="caps" width="66" height="24"/>
<s:Button x="275" y="133" id="b31" label="j" width="42" height="23"/>
<s:Button x="314" y="132" id="b32" label="k" width="31" height="24"/>
<s:Button x="133" y="133" id="b33" label="s" width="31" height="23"/>
<s:Button x="161" y="133" id="b34" label="d" width="31" height="23"/>
<s:Button x="250" y="133" id="b35" label="h" width="31" height="23"/>
<s:Button x="105" y="133" id="b36" label="a" width="31" height="23"/>
<s:Button x="191" y="133" id="b37" label="f" width="31" height="23"/>
<s:Button x="342" y="132" id="b38" label="l" width="31" height="24"/>
<s:Button x="152" y="154" id="b39" label="x" width="31" height="24"/>
<s:Button x="353" y="154" id="b40" label="." width="31" height="24"/>
<s:Button x="325" y="154" id="b41" label="," width="31" height="24"/>
<s:Button x="294" y="154" id="b42" label="m" width="31" height="24"/>
<s:Button x="259" y="154" id="b43" label="n" width="37" height="24"/>
<s:Button x="236" y="154" id="b44" label="b" width="31" height="24"/>
<s:Button x="211" y="154" id="b45" label="v" width="31" height="24"/>
<s:Button x="181" y="154" id="b46" label="c" width="31" height="24"/>
<s:Button x="122" y="154" id="b47" label="z" width="31" height="24"/>
<s:Button x="380" y="154" id="b48" label="/" width="31" height="24"/>
<s:Button x="368" y="132" id="b49" label=";" width="31" height="24"/>
<s:Button x="396" y="132" id="b50" label="'" width="31" height="24"/>
<s:Button x="43" y="154" id="b51" label="shift" width="82" height="24"/>
<s:Button x="407" y="154" id="b52" label="shift" width="79" height="24"/>
<s:Button x="455" y="109" id="b53" label="\" width="31" height="24"/>
</s:Panel>
<s:TextInput x="161" y="27" id="textbox" width="253"/>
</s:Application>
regards,
saran rhi,
how to code for these buttons "control,alt,delete,insert and spacebar".
can u help me how to program?
i have attached the mxml code with this,
virtualkeypad1.mxml
<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx" minWidth="955" minHeight="600"
creationComplete="application1_creationCompleteHandler(event)" viewSourceURL="srcview/index.html">
<fx:Script>
<![CDATA[
import flash.utils.getQualifiedSuperclassName;
import mx.events.FlexEvent;
private var inpText:String = 'inp1';
private var shiftState:Boolean = false;
private var capsState:Boolean = false;
protected function keyboard_clickHandler(event:MouseEvent):void
this[inpText].text = this[inpText].text+(event.currentTarget as Button).label;
if (shiftState == true) shift_clickHandler(null);
protected function caps_clickHandler(event:MouseEvent):void
capsState = !capsState;
if (capsState == true)
currentState = "SHIFTED" else currentState = "PRIMARY";
protected function tab_clickHandler(event:MouseEvent):void
this[inpText].text = this[inpText].text+" ";
protected function shift_clickHandler(event:MouseEvent):void
shiftState = !shiftState;
if (shiftState == true)
currentState = "SHIFTED" else currentState = "PRIMARY";
protected function enter_clickHandler(event:MouseEvent):void
this[inpText].text = this[inpText].text+"\n";
protected function backspace_clickHandler(event:MouseEvent):void
var tmpStr:String = this[inpText].text;
this[inpText].text = tmpStr.substr(0,tmpStr.length-1);
protected function application1_creationCompleteHandler(event:FlexEvent):void
inp1.setFocus();
protected function focus_enterHandler(event:MouseEvent):void
inpText = event.currentTarget.id;
]]>
</fx:Script>
<s:states>
<s:State name="PRIMARY"/>
<s:State name="SHIFTED"/>
</s:states>
<fx:Declarations>
<!-- Place non-visual elements (e.g., services, value objects) here -->
</fx:Declarations>
<s:TextInput id="inp1" y="36" width="151" horizontalCenter="0" click="focus_enterHandler(event)" y.PRIMARY="239" horizontalCenter.PRIMARY="42" width.PRIMARY="199" height.PRIMARY="31"/>
<s:Group id="keyboard" width="661" height="184" horizontalCenter="0" y="300" focusEnabled="false">
<s:Button x="5" y="5" label="~" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="`"/>
<s:Button x="49" y="5" label="!" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="1"/>
<s:Button x="93" y="5" label="@" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="2"/>
<s:Button x="137" y="5" label="#" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="3"/>
<s:Button x="181" y="5" label="$" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="4"/>
<s:Button x="225" y="5" label="%" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="5"/>
<s:Button x="269" y="5" label="^" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="6"/>
<s:Button x="313" y="5" label="&" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="7"/>
<s:Button x="357" y="5" label="*" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="8"/>
<s:Button x="401" y="5" label="(" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="9"/>
<s:Button x="445" y="5" label=")" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="0"/>
<s:Button x="489" y="5" label="_" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="-"/>
<s:Button x="533" y="5" label="+" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="="/>
<s:Button x="577" y="5" label="Backspace" height="43" width="80" fontSize="11" fontWeight="bold" click="backspace_clickHandler(event)"/>
<s:Button x="5" y="48" label="Tab" height="43" width="67" fontSize="12" fontWeight="bold" click="tab_clickHandler(event)"/>
<s:Button x="72" y="48" label="Q" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="q"/>
<s:Button x="116" y="48" label="W" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="w"/>
<s:Button x="160" y="48" label="E" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="e"/>
<s:Button x="204" y="48" label="R" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="r"/>
<s:Button x="248" y="48" label="T" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="t"/>
<s:Button x="292" y="48" label="Y" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="y"/>
<s:Button x="336" y="48" label="U" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="u"/>
<s:Button x="380" y="48" label="I" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="i"/>
<s:Button x="424" y="48" label="O" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="o"/>
<s:Button x="468" y="48" label="P" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="p"/>
<s:Button x="512" y="48" label="{" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="["/>
<s:Button x="556" y="48" label="}" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="]"/>
<s:Button x="600" y="48" label="|" height="43" width="57" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="\"/>
<s:Button x="5" y="91" label="CapsLock" height="43" width="80" fontSize="12" fontWeight="bold" click="caps_clickHandler(event)"/>
<s:Button x="85" y="91" label="A" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="a"/>
<s:Button x="129" y="91" label="S" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="s"/>
<s:Button x="173" y="91" label="D" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="d"/>
<s:Button x="217" y="91" label="F" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="f"/>
<s:Button x="261" y="91" label="G" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="g"/>
<s:Button x="305" y="91" label="H" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="h"/>
<s:Button x="349" y="91" label="J" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="j"/>
<s:Button x="393" y="91" label="K" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="k"/>
<s:Button x="437" y="91" label="L" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="l"/>
<s:Button x="481" y="91" label=":" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY=";"/>
<s:Button x="525" y="91" label=""" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="'"/>
<s:Button x="569" y="91" label="Enter" height="43" width="88" fontSize="24" fontWeight="bold" click="enter_clickHandler(event)"/>
<s:Button x="5" y="134" label="Shift" height="43" width="106" fontSize="24" fontWeight="bold" click="shift_clickHandler(event)"/>
<s:Button x="111" y="134" label="Z" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="z"/>
<s:Button x="155" y="134" label="X" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="x"/>
<s:Button x="199" y="134" label="C" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="c"/>
<s:Button x="243" y="134" label="V" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="v"/>
<s:Button x="287" y="134" label="B" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="b"/>
<s:Button x="331" y="134" label="N" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="n"/>
<s:Button x="375" y="134" label="M" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="m"/>
<s:Button x="419" y="134" label="<" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY=","/>
<s:Button x="463" y="134" label=">" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="."/>
<s:Button x="507" y="134" label="?" height="43" width="44" fontSize="24" fontWeight="bold" click="keyboard_clickHandler(event)" label.PRIMARY="/"/>
<s:Button x="551" y="134" label="Shift" height="43" width="106" fontSize="24" fontWeight="bold" click="shift_clickHandler(event)"/>
</s:Group>
</s:Application>
thanks in advance,
saran r -
When I wrote programs in my high-school AP class we always imported a keyboard class and used Keyboard.readInt or .readChar or whatever type. I've downloaded the keyboard class but don't know where to put it so I can import it to my programs and I don't know of any other ways to get keyboard input and the string tokenizer method is a bit confusing. Any help would be much appreciated, thanks a lot.
Hello Fignut,,
this is the forum for the JavaHelp product, not for general java programming questions.
Unfortunately I have no supernatural powers to know how your Keyboard class looks like, so I can offer only a solution with the standard API
String line;
try
{ BufferedReader in = new BufferedReader (new InputStreamReader(System.in));
System.out.println("Enter your text. Finish with <Ctrl>Z and <Ret>.\n");
while((line = in.readLine()) != null)
{ System.out.println("Echo: "+line);
in.close();
catch (Exception e)
{ System.out.println(e);
}Regards
J�rg -
HttpServer error in reading buffer size via keyboard input - HELP
I've written a simple HttpServer program that reads keyboard input to construct a buffer to copy the requested file into the socket's output stream. I've done the string-to-integer conversion using BufferedReader and parse.Int. However, when I go to use the int later in the program, I keep getting the message "variable b may not have been initialized." Can anyone tell me what's missing from the code below? Thanks.
private static void sendBytes(FileInputStream fis, OutputStream os)throws Exception
//Construct a buffer via console input
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String str;
int b;
System.out.println("Enter desired buffer size or CTRL-C to break.");
//Convert entry to an integer
do
str = br.readLine();
try
b = Integer.parseInt(str);
catch(NumberFormatException e)
System.out.println("Invalid entry.");
while((str=br.readLine())!=null);
//Construct a buffer
byte[] buffer = new byte;
int bytes = 0;
//Begin timing HTML page delivery
long start, end;
System.out.println("Timing for Web page delivery");
start = System.currentTimeMillis();
//Copy requested file into the socket's output stream
while((bytes = fis.read(buffer)) != -1)
os.write(buffer, 0, bytes);As the message suggests, what is missing is code to initialize the variable b. The first mention ("int b;") does not initialize it. The second mention ("b = Integer.parseInt(str);") only initializes it if no exception is thrown. So it's possible for b to be uninitialized when you actually try to use it.
What do you need to change? First you need to decide what's to be done if the keyboard input isn't a valid integer. Do you have a default value in mind? If so, put that where you declare the variable ("int b = 42;"). If not, just initialize the variable to zero ("int b = 0;"). -
Adobe Reader 10.1.2 not recognising keyboard input
Hi,
I'm having a problem with Adobe Reader X on Windows 7 Ultimate. Adobe Reader is not recognising any keyboard input, so I'm unable to type in a page number to jump to that page, the alt key doesn't bring up the menu, even Alt+F4 doesn't close the application etc. Has anybody experienced this problem, and if so, is there a solution out there?
I've tried both repairing the installation, and doing a new install, both of which have failed to rectify the problem.
Thanks.Sorry for the confusion. Please try the following steps:
1. Launch Notepad and type in following:
Windows Registry Editor Version 5.00
[-HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe]
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe]
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe\OpenWithList]
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\.exe\OpenWithProgids]
"exefile"=hex(0):
2. Click on File > Save As
3. In the new dialog that appears:
Select All Files in the Save as type list, and then type C:\Exe.reg in the File name box.
Select Unicode in the Encoding list. Save it and remember the file location.
4. Open My Computer and double click on the C: icon
5. You will see a file by the name of "Exe.reg". Double click on the same and click Yes on any dialog that appears.
6. Once completed, restart the computer and your problem should be resolved.
Ankit
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