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Cannot Be Cast To Java.awt.event.keylistener

The requestFocusInWindow() method makes sure that the JPanel has the focus in the window. KeyListener The KeyListener interface has three functions: keyPressed(), keyTyped(), and keyReleased(). Reference Sheets Code Snippets C Snippets C++ Snippets Java Snippets Visual Basic Snippets C# Snippets VB.NET Snippets ASP.NET Snippets PHP Snippets Python Snippets Ruby Snippets ColdFusion Snippets SQL Snippets Assembly Snippets Is it possible to write division equation in more rows? http://electrictricycle.net/cannot-be/cannot-be-cast-to-java-awt-event-mouselistener.html

Key Listener Fails When I Restart Pong Game General Discussion Caffeine Lounge Corner Cubicle Student Campus Software Development Industry News Introduce Yourself Nightmare.In.Code Programming Help C and C++ VB.NET Does a key signature go before or after a bar line? You also know how to create a custom display by extending JPanel and overriding the paintComponent() method. And when I open my MySQL (source database), the data is completely there. http://stackoverflow.com/questions/15146851/exception-in-thread-main-java-lang-classcastexception-hello-cannot-be-cast-to

Reputation: 972 Posts: 3,878 Joined: 07-January 08 Re: Exception in thread "AWT-EventQueue-0" java.lang.ClassCastExce Posted 27 July 2010 - 09:12 PM quishin, on 27 July 2010 - 08:05 PM, said:okay now I When you add a listener to a component, Swing automatically detects events in that component and calls the corresponding functions of the listener. Posted By JosAH (1 replies) Yesterday, 12:38 PM in Networking Can I develop this in java?

more hot questions lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science Other public class Hello implements ActionListener{ } share|improve this answer answered Feb 28 '13 at 22:28 mmc18 4,39953773 add a comment| Your Answer draft saved draft discarded Sign up or log Prepared for Yet Another Simple Rebus? Edit: After some good old println testing, it seems that your variable "a" is always 1 step behind.

Reference Sheets Code Snippets C Snippets C++ Snippets Java Snippets Visual Basic Snippets C# Snippets VB.NET Snippets ASP.NET Snippets PHP Snippets Python Snippets Ruby Snippets ColdFusion Snippets SQL Snippets Assembly Snippets Exercises Use the getWhen() method of various events to figure out how much time is really between a keyPressed and a keyReleased event. The code excerpt below contains the constructor for the Cell class (individual space on the Scrabble board). http://stackoverflow.com/questions/27274418/javax-swing-jpanel-cannot-be-cast-to-javax-swing-jlayeredpane The MouseMotionListener interface defines two functions: mouseDragged() and mouseMoved().

Here's an example class that implements MouseMotionListener: import java.awt.event.MouseEvent; import java.awt.event.MouseMotionListener; public class MyMouseMotionListener implements MouseMotionListener{ public void mouseDragged(MouseEvent e) { System.out.println("Mouse dragged: " + e.getX() + ", " + e.getY()); it keeps giving me exception: Exception in thread "main" java.lang.ClassCastException: szxdvbnmmmmm.Operator cannot be cast to java.awt.event.KeyListener at szxdvbnmmmmm.Operator.(Operator.java:43) at szxdvbnmmmmm.Application.(Application.java:21) at szxdvbnmmmmm.Main.main(Main.java:16) i don't know what to do to fix it!! This is because there are no characters that represent the arrow keys. I did not get any AWT ClassCastException though...how did you come across that?

Reply With Quote 04-06-2014,08:34 PM #7 JosAH Moderator Join Date Sep 2008 Location Voorschoten, the Netherlands Posts 14,323 Blog Entries7 Rep Power 25 Re: java.lang.String cannot be cast to java.lang.Boolean No, https://coderanch.com/t/560746/java/java-lang-ClassCastException This post has been edited by n8wxs: 27 July 2010 - 09:12 PM Was This Post Helpful? 0 Back to top MultiQuote Quote + Reply #10 Guest_quishin* Reputation: Re: Exception in more hot questions question feed lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Matthew Brown Bartender Posts: 4568 9 posted 4 years ago And Welcome to The Ranch!

Does that make a lot of problems? –Potatoesforfish Jun 13 '13 at 22:02 @Potatoesforfish, what are you talking about? navigate here If I receive written permission to use content from a paper without citing, is it plagiarism? Does sputtering butter mean that water is present? So now, I'm going to fill up those text field to be able to save in my database.

If I did it your way - If all fields always have valid information and you want to recalculate every time a single digit is change then my way (the better Here's my code: import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyAdapter; import java.awt.event.KeyEvent; import java.io.BufferedReader; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; Was This Post Helpful? 0 Back to top MultiQuote Quote + Reply ← Previous Topic Java Next Topic → (4 Pages) 1 2 3 → Last » Related Java TopicsbetaDecimal Check This Out Reply With Quote 04-06-2014,05:25 PM #3 Norm Moderator Join Date Jun 2008 Location Eastern Florida Posts 19,204 Rep Power 29 Re: java.lang.String cannot be cast to java.lang.Boolean A String is NOT

Leveling Pokemon using the Lumiose Tower infinite loop path Why do I never get a mention at work? share|improve this answer answered Feb 28 '13 at 22:26 Jon Skeet 905k48965697492 add a comment| up vote 0 down vote You have to implement ActionListener. Read this blog for more info, and check out my new project at HappyCoding.io!

Create a program that displays 10 or so JButtons, each with a different letter.

more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed Without opening the PHB, is there a way to know if it's a particular printing? Remember that an interface declares a set of methods that any implementations (classes that implement the interface) must define. We can use an instance of this class as all three listeners instead of splitting out logic up into multiple classes: import javax.swing.JFrame; import javax.swing.JPanel; public class Main{ public static void

For example you have a "Submit" button on a form. Reply With Quote « how to do this ? import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import javax.swing.*; public class Operator extends JPanel implements ActionListener { private JButton opp[]; private JTextField d; public Operator(JTextField dd) { opp=new this contact form There are better API's to be used.

n-dimensional circles! Detecing Non-Character Keys If you play with the above program, you'll notice that character keys like letters, numbers, and symbols work fine. Assigning a unique representation to equivalent circular queues What commercial flight route requires the most (minimum possible) stops/layovers from A to B? Why do I never get a mention at work?

The MouseMotionListener interface works just like you'd expect, defining functions that Swing automatically calls when certain events happen. Seems like your class is not implementing a KeyListener Infact, I think you don't need that line at all, as you already attached an KeyListener to jTextField2 by doing jTextField2.addKeyListener(new ... How can I trust that this is google? Join them; it only takes a minute: Sign up What is the proper use of KeyListener? [closed] up vote 0 down vote favorite So I have been working on trying to

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