简介
java.lang.SuppressWarnings是J2SE5.0中标准的Annotation之一。可以标注在类、字段、方法、参数、构造方法,以及局部变量上。
作用
告诉编译器忽略指定的警告,不用在编译完成后出现警告信息。建议注解应声明在最接近警告发生的位置。
使用
@SuppressWarnings(“”)
@SuppressWarnings({})
@SuppressWarnings(value={})
抑制警告的关键字
关键字 | 用途 |
---|---|
all | to suppress all warnings(抑制所有警告) |
boxing | to suppress warnings relative to boxing/unboxing operations(要抑制与箱/非装箱操作相关的警告) |
cast | to suppress warnings relative to cast operations(为了抑制与强制转换操作相关的警告) |
dep-ann | to suppress warnings relative to deprecated annotation(要抑制相对于弃用注释的警告) |
deprecation | to suppress warnings relative to deprecation(要抑制相对于弃用的警告) |
fallthrough | to suppress warnings relative to missing breaks in switch statements(在switch语句中,抑制与缺失中断相关的警告) |
finally | to suppress warnings relative to finally block that don’t return(为了抑制警告,相对于最终阻止不返回的警告) |
hiding | to suppress warnings relative to locals that hide variable(为了抑制本地隐藏变量的警告) |
incomplete-switch | to suppress warnings relative to missing entries in a switch statement (enum case)(为了在switch语句(enum案例)中抑制相对于缺失条目的警告) |
nls | to suppress warnings relative to non-nls string literals(要抑制相对于非nls字符串字面量的警告) |
null | to suppress warnings relative to null analysis(为了抑制与null分析相关的警告) |
rawtypes | to suppress warnings relative to un-specific types when using generics on class params(在类params上使用泛型时,要抑制相对于非特异性类型的警告) |
restriction | to suppress warnings relative to usage of discouraged or forbidden references(禁止使用警告或禁止引用的警告) |
serial | to suppress warnings relative to missing serialVersionUID field for a serializable class(为了一个可串行化的类,为了抑制相对于缺失的serialVersionUID字段的警告) |
static-access | to suppress warnings relative to incorrect static access(o抑制与不正确的静态访问相关的警告)) |
synthetic-access | to suppress warnings relative to unoptimized access from inner classes(相对于内部类的未优化访问,来抑制警告) |
unchecked | to suppress warnings relative to unchecked operations(相对于不受约束的操作,抑制警告) |
unqualified-field-access | to suppress warnings relative to field access unqualified(为了抑制与现场访问相关的警告) |
unused | to suppress warnings relative to unused code(抑制没有使用过代码的警告) |
例子
@SuppressWarnings("unchecked")
告诉编译器忽略 unchecked 警告信息,如使用List,ArrayList等未进行参数化产生的警告信息。
@SuppressWarnings("unchecked", "deprecation")
告诉编译器同时忽略unchecked和deprecation的警告信息。等同于@SuppressWarnings(value={"unchecked", "deprecation"})
标签:SuppressWarnings,抑制,suppress,warnings,relative,警告 From: https://www.cnblogs.com/chandol/p/16733587.html引用自:https://blog.csdn.net/u012994320/article/details/83083392