Java:“匿名"for-each-loop 中的数组 [英] Java: "Anonymous" array in for-each-loop

问题描述

当我在 for 循环中尝试一些特殊的东西时，我意识到 Java 似乎不喜欢将匿名数组作为 for-each-loop 的源:

While I was trying something special in for loop I recognized that Java doesn't seem to like putting an anonymous array right as the source for a for-each-loop:

for (String crt : {"a","b","c"} ) {
    doSomething();
}

实际上不起作用

String[] arr = {"a","b","c"};
for (String crt : arr ) {
    doSomething();
}

确实如此.

即使将数组转换为 String[] 也无济于事.将光标移到第一个版本上时，eclipse 告诉我:

Even casting the array to String[] doesn't help. When moving the cursor over the first version, eclipse tells me:

类型不匹配:不能从 String[] 转换为 String 而意思是crt".

这是一个错误吗?

推荐答案

这会起作用:

for (String crt : new String[]{"a","b","c"} ) {
    doSomething();
}

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