java - 没有大括号的嵌套 if-else 行为

Question

考虑以下未格式化的嵌套 if-else Java 代码

if (condition 1)
if (condition 2)
action 1;
else
action 2;

我的问题是:根据Java语言规范，else分支适用于什么？

通过手动重新格式化和添加大括号，这两个哪个是正确的？

block 1:

if (condition 1) {
    if (condition 2) {
        action 1;
    } else
        action 2;
    }
}

第 2 部分:

if (condition 1) {
    if (condition 2) {
        action 1;
    }
}
else {
    action 2;
}

Answer 1

来自Java Language Specification :

The Java programming language, like C and C++ and many programming languages before them, arbitrarily decrees that an else clause belongs to the innermost if to which it might possibly belong.