Java 7 的组合/多捕获块是否有正式名称？

Question

在讨论 multiple-catch / combined catch 块 here 时，术语 "multiple catch block," 含义不明确 Java 7 特征：

try { .. } catch (ExceptionA | ExceptionB ex) { .. }

和"multiple catch blocks,"字面上的意思，多个catch块：

} catch (ExceptionA exa) { ..
} catch (ExceptionB exb) { .. }

我研究过 Java 7 功能是否有一个特定的官方名称，可以用来清楚地区分它与捕获多个异常的旧样式。但是，Oracle sources don't seem to name this feature anywhere, while some other sources (like Eclipse and SO) 称其为 "multi-catch" 块。

是否有正式的 Oracle 为该功能命名的名称？

Answer 1

Java Language Specification section 14.20 指的是 uni-catch 和 multi-catch 子句，这是官方的.

A catch clause whose exception parameter is denoted as a single class type is called a uni-catch clause.

A catch clause whose exception parameter is denoted as a union of types is called a multi-catch clause.

当然，在 Java 7 之前没有 multi-catch 子句，因此在引入 multi-catch 之前术语 "uni-catch" 从来都不是必需的。

术语 multi-catch 不同于具有多个（多个）catch 子句。