How do I suppress Eclipse 3.5's warnings of dead code

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难免孤独
难免孤独 2021-02-07 09:44

I use a class for detecting email addresses which uses static final booleans to configure the matching behavior. Since I upgraded to Eclipse 3.5 I get warnings about dead code,

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  • 2021-02-07 10:12

    You can disable the 'dead code' warnings using

    @SuppressWarnings( "unused" )
    

    See the eclipse documentation for more Information:

    http://help.eclipse.org/kepler/index.jsp?topic=%2Forg.eclipse.jdt.doc.user%2Ftasks%2Ftask-suppress_warnings.htm

    "unused" to suppress warnings relative to unused code and dead code

    Greetings

    Christopher

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  • 2021-02-07 10:17

    Select Ignore in Windows -> Preferences > Java > Compiler > Errors/Warnings under Potential programming problems section

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  • 2021-02-07 10:31

    UPDATE: from Adam's comment:

    In Eclipse 3.6 and newer Eclipse versions @SuppressWarnings("unused") can now be used to suppress 'dead code' warnings. See Christopher Stock's answer.

    See also Eclipse 4.4(Luna) help for @SuppressWarnings.

    Original answer:

    All SuppressWarnings values Eclipse 3.5 "knows" are listed in this page. It seems that there is no value for suppressing only the new dead-code detection. But you can use the @SuppressWarnings("all") just before the domain declaration so it will suppress warnings for only that line not for the whole class:

    private static final boolean ALLOW_DOMAIN_LITERALS = false;
    @SuppressWarnings("all") 
    private static final String domain = ALLOW_DOMAIN_LITERALS ? rfc2822Domain : rfc1035DomainName;
    

    Because dead code check is a new one you can also suggest an enchancement in the Eclipse bug database for supporting the ternary operation as well.

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