Out of scope

http://lilisworking.wordpress.com/2009/12/14/basic-button-feature/ OP didn’t know setText(). After searching API classes, he found a method setName() and guessed it would probably be the one needed. This is caused by confusing API. http://lilisworking.wordpress.com/2009/10/22/pilot-study-of-jbutton-13/ Object-oriented problem http://lilisworking.wordpress.com/2009/09/07/pilot-study-of-jbutton-button-enabling/ OOP: passing references between frames.

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Information Barriers

“I think I know why it didn’t do what I expected, but I don’t know how to check…” http://lilisworking.wordpress.com/2009/10/05/pilot-study-of-jbutton-button-shift-down/ OP should know every components could have its own layout manager type. This is either an understanding or information barrier. http://lilisworking.wordpress.com/2009/08/26/pilot-study-of-jbutton-button/ JTogglebutton would be more appropriate than JButton in this case. This reminds me that selection [...]

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Understanding Barriers

“I thought I knew how to use this, but it didn’t do what I expected…” http://lilisworking.wordpress.com/2009/09/30/pilot-study-of-jbutton-6/ &&http://lilisworking.wordpress.com/2009/10/22/pilot-study-of-jbutton-12/OS and Java version difference could cause different LAF with the same program. The appearance did not show up as expected. http://lilisworking.wordpress.com/2009/10/05/pilot-study-of-jbutton-button-shift-down/ OP should know every components could have its own layout manager type. This is either an understanding [...]

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Use Barrierss

“I think I know what to use, but I don’t know how to use it…” http://lilisworking.wordpress.com/2009/10/23/pilot-study-of-jbutton-layout-2/ Not knowing how to use third party layout manager types. http://lilisworking.wordpress.com/2009/08/25/pilot-study-of-jbutton-button-color/ UIManager could customize components’ appearance. However, a limitation is same type will all share the same properties. http://lilisworking.wordpress.com/2009/09/07/pilot-study-of-jbutton-button-imageicon/ usage barrier – OP was stuck with a type cast [...]

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Coordination Barriers

“I think I know what things to use, but I don’t know how to make them work together..” http://lilisworking.wordpress.com/2009/10/01/pilot-study-of-jbutton-layoutrelated/ Coordination: 1. add widgets to a container; 2. call revalidate() on the container.

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Selection Barriers

“I think I know what I want the computer to do, but I don’t know what to use” http://lilisworking.wordpress.com/2009/12/01/font/ A selection barrier. HTML and API classes both have solution. In this case, the problem is because fail to find setFont(). http://lilisworking.wordpress.com/2009/10/05/pilot-study-of-jbutton-10/ Default API could solve the problem. A selection barrier of drawing method.(drawImage, drawString) http://lilisworking.wordpress.com/2009/08/17/pilot-study-form-example/ [...]

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Design Barriers

“I don’t know what I want the computer to do” http://lilisworking.wordpress.com/2009/09/02/pilot-study-of-jbutton-chess-game-analogous-topic-of-cursorbutton/ The chess game is a sophisticated program. OP do not know how to design this project. A sample code helped a lot in this case. http://lilisworking.wordpress.com/2009/10/26/pilot-study-of-jbutton-14/ && http://lilisworking.wordpress.com/2009/10/15/pilot-study-of-jbutton-interaction-with-jtextfield/ Design barriers: how to customize title bar and system function buttons. http://lilisworking.wordpress.com/2009/10/06/pilot-study-of-jbutton-focus/ In this post, OP cannot [...]

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