java - 空字符串和单个分隔符字符串上的字符串拆分行为

Question

这是 this question 的后续行动.

问题在下面第二行。

"".split("x");   //returns {""}   // ok
"x".split("x");  //returns {}   but shouldn't it return {""} because it's the string before "x" ?
"xa".split("x"); //returns {"", "a"}    // see?, here "" is the first string returned
"ax".split("x"); //returns {"a"}

Answer 1

不，因为根据 the relevant javadoc “尾随的空字符串将被丢弃”。