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  1. JDK
  2. JDK-5027400

Creating UI with WindowsLookAndFeel is slow

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      An application that uses native look and feel needs longer time to start because building of its UI and painting is slower than with metal look and feel.

      I measured time to create main window and paint it on a simple app that mimics NetBeans UI - menu hierarchy, toolbar icons, status line and currently empty main desktop area. Results on P4 2GHz, 1GB, WinXP consistently show the difference.

      With default L&F and JDK1.4.2_03 times for warm start of this app are 961, 972, 961ms.
      With WindowsLookAndFeel and JDK1.4.2_03 times for warm start of this app are 1222, 1242, 1252ms.
      With default L&F and JDK1.5.0b39 times for warm start of this app are 1072, 1081, 1082ms.
      With WindowsLookAndFeel and JDK1.5.0b39 times for warm start of this app are 1473, 1472, 1482ms.

      ###@###.### 2004-04-06

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              bchristi Brent Christian
              duke J. Duke
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