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http://issues.apache.org/bugzilla/show_bug.cgi?id=38785

           Summary: strange looking equals
           Product: Batik
           Version: 1.6
          Platform: All
        OS/Version: other
            Status: NEW
          Severity: normal
          Priority: P2
         Component: CSS
        AssignedTo: [email protected]
        ReportedBy: [EMAIL PROTECTED]


in batik.css.engine.sac.AbstractElementSelector i found an equals-method like 
this:
 public boolean equals( Object obj ) {
    if ( obj == null || !( obj.getClass() != getClass() )) {
      return false;
    }
    ... other comparisons ...

The double negated class-compare doesnt make sense to me. The intention seems to
be to reject checks against other classes. I 'd do it with instanceof.
The same code exists in AbstractAttributeCondition, AbstractCombinatorCondition,
 AbstractDescendantSelector, AbstractSiblingSelector, CSSConditionalSelector,
CSSLangCondition.

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