SynthLookAndFeel ?

[kleist]

When trying to add the new "Synth" look-and-feel (J2SE 5.0 beta 2) on the preferences page (Designer > Swing > Look and Feel) I get an exception:

Code: Select all

!ENTRY com.swtdesigner 4 4 Aug 18, 2004 18:09:20.734
!MESSAGE Designer internal error: (javax/swing/plaf/synth/SynthLookAndFeel) bad major version at offset=6
!STACK 0
java.lang.UnsupportedClassVersionError: (javax/swing/plaf/synth/SynthLookAndFeel) bad major version at offset=6
   at java.lang.Throwable.<init>(Throwable.java)
   at java.lang.Throwable.<init>(Throwable.java)
   at java.lang.UnsupportedClassVersionError.<init>(UnsupportedClassVersionError.java:51)
   at java.lang.ClassLoader.defineClassImpl(Native Method)
   at java.lang.ClassLoader.defineClass(ClassLoader.java)
   at java.security.SecureClassLoader.defineClass(SecureClassLoader.java)
   at java.net.URLClassLoader.defineClass(URLClassLoader.java)
   at java.net.URLClassLoader.access$400(URLClassLoader.java)
   at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java)
   at java.security.AccessController.doPrivileged(AccessController.java:218)
   at java.net.URLClassLoader.findClass(URLClassLoader.java)
   at java.lang.ClassLoader.loadClass(ClassLoader.java)
   at java.lang.ClassLoader.loadClass(ClassLoader.java)
   at com.swtdesigner.actions.laf.LAFInfo.getInstance(SourceFile:43)
   at com.swtdesigner.actions.laf.LookAndFeelContributionItem.setLookAndFeel(SourceFile:147)
   at com.swtdesigner.actions.laf.LookAndFeelContributionItem.updateDefaultSystemLookAndFeel(SourceFile:143)
   at com.swtdesigner.editors.MultiPageEditor.createPartControl(SourceFile:151)

...


I do realize that this is bleeding edge, I have absolutely no right to except that Swing Designer supports this beta version. But nevertheless: Is support for this exciting LAF planned for?

Thanks.

[Eric Clayberg]

When trying to add the new "Synth" look-and-feel (J2SE 5.0 beta 2) on the preferences page (Designer > Swing > Look and Feel) I get an exception:

Code: Select all

!ENTRY com.swtdesigner 4 4 Aug 18, 2004 18:09:20.734
!MESSAGE Designer internal error: (javax/swing/plaf/synth/SynthLookAndFeel) bad major version at offset=6
!STACK 0
java.lang.UnsupportedClassVersionError: (javax/swing/plaf/synth/SynthLookAndFeel) bad major version at offset=6
   at java.lang.Throwable.<init>(Throwable.java)
   at java.lang.Throwable.<init>(Throwable.java)
   at java.lang.UnsupportedClassVersionError.<init>(UnsupportedClassVersionError.java:51)
   at java.lang.ClassLoader.defineClassImpl(Native Method)
   at java.lang.ClassLoader.defineClass(ClassLoader.java)
   at java.security.SecureClassLoader.defineClass(SecureClassLoader.java)
   at java.net.URLClassLoader.defineClass(URLClassLoader.java)
   at java.net.URLClassLoader.access$400(URLClassLoader.java)
   at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java)
   at java.security.AccessController.doPrivileged(AccessController.java:218)
   at java.net.URLClassLoader.findClass(URLClassLoader.java)
   at java.lang.ClassLoader.loadClass(ClassLoader.java)
   at java.lang.ClassLoader.loadClass(ClassLoader.java)
   at com.swtdesigner.actions.laf.LAFInfo.getInstance(SourceFile:43)
   at com.swtdesigner.actions.laf.LookAndFeelContributionItem.setLookAndFeel(SourceFile:147)
   at com.swtdesigner.actions.laf.LookAndFeelContributionItem.updateDefaultSystemLookAndFeel(SourceFile:143)
   at com.swtdesigner.editors.MultiPageEditor.createPartControl(SourceFile:151)

...


I do realize that this is bleeding edge, I have absolutely no right to except that Swing Designer supports this beta version. But nevertheless: Is support for this exciting LAF planned for?

You can use any Look & Feel you want, but you need to make sure that the JRE used to run the IDE supports the Look & Feel you want to use. The above error indicates a mismatch caused by using an earlier JRE. Designer runs within the IDE, so the IDE itself needs to be able to load any custom classes you want use. You might be able to use the -vm startup option to specify a more recent JRE. Another alternative might be to get the source for the SynthLookAndFeel class and compile it using the JRE you are using to run the IDE.