If you compile awt/ComponentTest.java under 1.0.2 JDK, then use the 1.0.1
appletviewer to view it, under either Win32 and Solaris, you will find an error
like this when you try to bring up a file dialog:

java.lang.NoSuchMethodError: java.awt.Dialog: method show()V not found
        at CTest.action(ComponentTest.java:152)
        at java.awt.Component.handleEvent(Component.java:900)
        at CTest.handleEvent(ComponentTest.java:125)
        at java.awt.Component.postEvent(Component.java:838)
        at java.awt.MenuComponent.postEvent(MenuComponent.java:94)
        at java.awt.MenuComponent.postEvent(MenuComponent.java:94)
        at java.awt.MenuComponent.postEvent(MenuComponent.java:94)
        at sun.awt.motif.MMenuItemPeer.action(MMenuItemPeer.java:44)
        at java.lang.Thread.run(Thread.java)

This problem is not encountered if you compile and run the same test under 1.0.1.