How to check the status of a caps lock key..? Â

Question:How to check the status of a caps lock key..?  ?

Answer: <P>You can do it&nbsp;without using&nbsp;key event, by creating an artificial key event using java.awt.Robot class to generate a "simple caracter" key press (for instance KeyEvent.VK_A). <BR>Sample Source Code -- May not be accurate but the concept is as follows. </P><P><EM><FONT style="BACKGROUND-COLOR: #ffcc00">import java.awt.*;<BR>import java.awt.event.*;</FONT></EM></P><P><EM><FONT style="BACKGROUND-COLOR: #ffcc00">public class Test {</FONT></EM></P><P><EM><FONT style="BACKGROUND-COLOR: #ffcc00">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; public static void main(String[] args) throws AWTException {<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // create AWT component<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Frame f = new Frame();<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // handle component&#39;s keyPressed event<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; f.addKeyListener(new KeyAdapter() {&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; public void <BR>keyPressed(KeyEvent ev) {System.out.println<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (Character.isUpperCase( ev.getKeyChar()) ?&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; "Caps Lock <BR>ON" :"Caps Lock OFF");}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; });<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // make component visible (otherwise the Robot won&#39;t <BR>work)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; f.show();<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // create Robot<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Robot robot = new Robot();<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; // generate simple caracter key press<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; robot.keyPress(KeyEvent.VK_A);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }</FONT></EM></P><P><EM><FONT style="BACKGROUND-COLOR: #ffcc00">}</FONT></EM></P>

Tags:Interview Questions, J2EE, Java,

Please submit your Interview Answer for the above Question via replying to this post. Thank you for visiting to our blog, Have a Good Day!.

---

Sponsor Advertisement

Real Estate Management System Software

Real Estate Management Software is an advanced end-to-end Real Estate Office Management System that enables Real Estate Agencies to manage more effectively, search prorty details, keep property owner data etc. Web-based tracking and accounting solution ideal for commercial, residential housing....