使用示例：
import java.util.ArrayList; import java.util.List; public class SuppressWarningsTest { // 抑制没有进行类型检查操作的警告 @SuppressWarnings(value="unchecked") public static void main(String[] args) { // 使用 generics(泛型) 时忽略没有指定相应的类型 @SuppressWarnings("rawtypes") List myList = new ArrayList(); myList.add(""); } }对比： value 的其他取值及作用
value值作用allto suppress all warnings抑制所有警告boxingto suppress warnings relative to boxing/unboxing operations抑制装箱、拆箱操作时候的警告castto suppress warnings relative to cast operations抑制映射相关的警告dep-annto suppress warnings relative to deprecated annotation抑制启用注释的警告deprecationto suppress warnings relative to deprecation抑制过期方法警告fallthroughto suppress warnings relative to missing breaks in switch statements抑制确在switch中缺失breaks的警告finallyto suppress warnings relative to finally block that don’t return抑制finally模块没有返回的警告hidingto suppress warnings relative to locals that hide variable抑制相对于隐藏变量的局部变量的警告incomplete-switchto suppress warnings relative to missing entries in a switch statement (enum case)忽略没有完整的switch语句nlsto suppress warnings relative to non-nls string literals忽略非nls格式的字符nullto suppress warnings relative to null analysis忽略对null的操作rawtypesto suppress warnings relative to un-specific types when using generics on class params使用generics时忽略没有指定相应的类型restrictionto suppress warnings relative to usage of discouraged or forbidden references禁止使用与不鼓励或禁止引用相关的警告serialto suppress warnings relative to missing serialVersionUID field for a serializable class忽略在serializable类中没有声明serialVersionUID变量static-accessto suppress warnings relative to incorrect static access抑制不正确的静态访问方式警告synthetic-accessto suppress warnings relative to unoptimized access from inner classes抑制子类没有按最优方法访问内部类的警告uncheckedto suppress warnings relative to unchecked operations抑制没有进行类型检查操作的警告unqualified-field-accessto suppress warnings relative to field access unqualified抑制没有权限访问的域的警告unusedto suppress warnings relative to unused code抑制没被使用过的代码的警告