Consider the following program,
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jtools-sqe:/home/vr128054/vertest/work 278 % more test.java
public class test
{
        public final abstract void methodOne ()
        {
        }
}


this is a negative test case written to check conformance to JLS as a final method cannot be 'abstract'.

Find Javadoc's behaviour below..
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jtools-sqe:/home/vr128054/vertest/work 279 % javadoc test.java
Loading source file test.java...
Constructing Javadoc information...
test.java:3: illegal combination of modifiers: abstract and final
        public final abstract void methodOne ()
                                   ^
Standard Doclet version 1.4 beta (04 Aug 2001)

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1 warning