@SuppressWarnings 注解详述

1 SuppressWarnings简介

　　SuppressWarnings 是 J2SE 5.0 中标准的 Annotation 之一，其可以标注在类、字段、方法、参数、构造函数，以及局部变量上，其作用为：告诉编译器忽略制定的警告，不用在编译完成后出现警告信息。

2 SuppressWarnings使用方法

• 第一种：@SuppressWarnings("")
• 第二种：@SuppressWarnings({})
• 第三种：@SuppressWarinings(value = {})

3 SuppressWarnings注解详述

• all：to suppress all warnings
• boxing：to suppress warnings relative to boxing/unboxing operations
• cast：to suppress warnings relative to cast operations
• dep-ann：to suppress warnings relative to deprecated annotation
• deprecation：to suppress warnings relative to deprecation
• fallthrough：to suppress warnings relative to missing breaks in switch statements
• finally：to suppress warnings relative to finally block that don’t return
• hiding：to suppress warnings relative to locals that hide variable
• incomplete-switch：to suppress warnings relative to missing entries in a switch statement (enum case)
• nls：to suppress warnings relative to non-nls string literals
• null：to suppress warnings relative to null analysis
• rawtypes：to suppress warnings relative to un-specific types when using generics on class params
• restriction：to suppress warnings relative to usage of discouraged or forbidden references
• serial：to suppress warnings relative to missing serialVersionUID field for a serializable class
• static-access：to suppress warnings relative to incorrect static access
• synthetic-access：to suppress warnings relative to unoptimized access from inner classes
• unchecked：to suppress warnings relative to unchecked operations
• unqualified-field-access：to suppress warnings relative to field access unqualified
• unused：to suppress warnings relative to unused code