http://www.javaswing.net Swing, SWT and Java Desktop related Technologies Wed, 30 Jul 2008 14:59:32 +0000 http://backend.userland.com/rss092 en Don't get me wrong. Using Constants are good. But I am just facing a situation where I feel terribly bad on why I did. Let me explain the background. We make software. As in, Big software. At least So big that we cannot re-deliver the whole code ... http://www.javaswing.net/never-thought-even-constantspublic-static-final-could-be-bad.html    JFormattedTextField is a very useful Swing component, that let's your users see data in a format suitable for them, while letting you read or write from it in a way that that suitable for your code. Let's make sure that you clearly understand everything related to it.    Ok, let's ... http://www.javaswing.net/demystifying-jformattedtextfield-a-step-by-step-tutorial.html    Here's 3 kinds of text fields that you may want to use in your java swing projects. An "Email" text-field: That doesn't let the focus out without the user entering a valid email address An "Numeric" text-field: That accepts only numeric input and ignores all others An "upper case" text-field: That automatically converts ... http://www.javaswing.net/ready-made-simple-custom-textfield-components.html    Here’s a ready made Email text field written as a swing component. This text field allows the user to type any thing in it but does not allow the focus to go out of it unless whatever the user has typed is a valid email address. Note that extensive validation ... http://www.javaswing.net/email-jtextfield-in-swing-ready-made-code.html Here’s a ready made Numeric(Numbers only) text field written as a swing component. This text field allows only numeric data to be entered in it. When the user enters anything that non numeric in the text field, the system will beep. It's implemented using a DocumentFilter that filters ... http://www.javaswing.net/numeric-number-only-jtextfield-in-swing-ready-made-code.html     Here's a ready made Upper case text field written as a swing component. It converts all characters entered in it automatically to upper case before inserting into it's own document. So the when the user types in this text field he will see only characters in upper case irrespective ... http://www.javaswing.net/upper-case-jtextfield-in-swing-ready-made-code.html   Have you ever tried to make a textfield that accepts only 20 characters? Or a text area that automatically converts the user typed letters to upper case? Swing's Document Listener is the most accurate and hassle-free way to achieve this in Swing. This articles explains you what you need to ... http://www.javaswing.net/max-length-on-jtextfield-using-documentfilter-a-step-by-step-tutorial.html Let's consider a common coding situation. Suppose you have a text field in your form that accepts an email address. Suppose you need to code such that if the email address typed by the user is not valid, then you shouldn't let the focus out of ... http://www.javaswing.net/swings-inputverifier-tutorial-a-super-elegant-way-for-validation.html Consider you have a form with several text fields and some buttons. One of the buttons is usually the "default" button , which would get executed if the user pressed enter, while the focus is in any of the text fields in that form. You should have definitely ... http://www.javaswing.net/setting-the-default-button-in-swing.html SwingWorker is one of the most handiest utility classes provided in Swing. Most of the interviews on Swing have a question or two on this class. Let's make sure you know all about it's need and usage. Step by Step. A (Quick) look at the problem with the "Event Dispatch" thread:     ... http://www.javaswing.net/using-swingworker-a-step-by-step-tutorial.html