This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
Hello, I would like to post a question concerning the behaviour of JTextField when it gains focus. I believe it is a kind of bug in the implementation, but all the research I made on the topic has not given me any further information. Everything started because of a requirement: The text fields in our applications should select the contents when they get the focus. (Easy to see, when a field gets the focus, text should appear with a green background). This seemed to be so easy because this is the default behaviour of the Windows Look and Feel. This is what is said in the WindowsTextFieldUI class: /** * Provides the Windows look and feel for a text field. This * is basically the following customizations to the default * look-and-feel. *
The border is beveled (using the standard control color). *
The background is white by default. *
The highlight color is a dark color, blue by default. *
The foreground color is high contrast in the selected * area, white by default. The unselected foreground is black. *
The cursor blinks at about 1/2 second intervals. *
The entire value is selected when focus is gained. *
Shift-left-arrow and shift-right-arrow extend selection *
Cntrl-left-arrow and cntrl-right-arrow act like home and * end respectively. *
*/ Unfortunately: I have found out in Sun JVM this was not working at all (JVM 1.2.2, JVM 1.3.1, JVM 1.4b). But on a IBM JVM (JVM 1.2.2) it worked fine. This was somehow confusing me completely. An anouced behaviour is later not working in the implementation. Why? I solved the problem by simply calling the WindowsTextFieldUI specifically and assigning it to the JTextFields. I did not rewrote any code, I just simply made sure the class was being used. Does anybody knows about this problem? Is that a problem with the Windows Look and Feel? Should I notify Sun about this?