如何抑制 Eclipse 3.5 的死代码警告
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How do I suppress Eclipse 3.5's warnings of dead code
提问by Peter Becker
I use a class for detecting email addresseswhich uses static final booleans to configure the matching behavior. Since I upgraded to Eclipse 3.5 I get warnings about dead code, since Eclipse notices that one branch in this can not be reached:
我使用一个类来检测电子邮件地址，该类使用静态最终布尔值来配置匹配行为。自从我升级到 Eclipse 3.5 后，我收到了关于死代码的警告，因为 Eclipse 注意到无法访问其中的一个分支：
private static final boolean ALLOW_DOMAIN_LITERALS = false;
private static final String domain = ALLOW_DOMAIN_LITERALS ? rfc2822Domain : rfc1035DomainName;
Oddly enough it is happy with this:
奇怪的是，它对此很满意：
private static final String domain;
static {
if(ALLOW_DOMAIN_LITERALS) {
domain = rfc2822Domain;
} else {
domain= rfc1035DomainName;
}
}
since it seems to recognize the common if(DEBUG)pattern, but the ternary operator doesn't seem to count.
因为它似乎可以识别常见if(DEBUG)模式，但三元运算符似乎并不重要。
Since I'd rather not fork the class too much just to keep Eclipse happy, I'd prefer putting an @SuppressWarningsat the top instead of changing the code. Unfortunately I can't find a matching one apart from the brute-force "all". Is there a value just for the dead code detection?
因为我不想为了让 Eclipse 开心而过多地 fork 类，所以我更喜欢将 放在@SuppressWarnings顶部而不是更改代码。不幸的是，除了 brute-force 之外，我找不到匹配的"all"。是否有仅用于死代码检测的值？
回答by Csaba_H
UPDATE: from Adam's comment:
更新：来自亚当的评论：
In Eclipse 3.6 and newer Eclipse versions @SuppressWarnings("unused")can now be used to suppress 'dead code' warnings. See Christopher Stock's answer.
在 Eclipse 3.6 和更新的 Eclipse 版本@SuppressWarnings("unused")中，现在可用于抑制“死代码”警告。参见Christopher Stock 的回答。
See also Eclipse 4.4(Luna) helpfor @SuppressWarnings.
另请参阅Eclipse 4.4(Luna) 帮助以了解 @SuppressWarnings。
Original answer:
原答案：
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 domaindeclaration so it will suppress warnings for only that line not for the whole class:
此页面中列出了 Eclipse 3.5“知道”的所有 SuppressWarnings 值。似乎只抑制新的死码检测没有任何价值。但是您可以@SuppressWarnings("all")在domain声明之前使用 ，这样它就会抑制仅针对该行而不是针对整个类的警告：
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 databasefor supporting the ternary operation as well.
因为死代码检查是一种新的检查，您还可以建议在Eclipse 错误数据库中进行增强以支持三元操作。
回答by J-16 SDiZ
Select Ignorein Windows -> Preferences > Java > Compiler > Errors/Warningsunder Potential programming problemssection
Ignore在部分Windows -> Preferences > Java > Compiler > Errors/Warnings下选择Potential programming problems
回答by Christopher Stock
You can disable the 'dead code' warnings using
您可以使用禁用“死代码”警告
@SuppressWarnings( "unused" )
See the eclipse documentation for more Information:
有关更多信息，请参阅 eclipse 文档：
"unused" to suppress warnings relative to unused code and dead code
“未使用”以抑制与未使用代码和死代码相关的警告
Greetings
你好
Christopher
克里斯托弗
