Java replaceAll("\\s+") vs replaceAll("\\\\s+")
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时间:2020-08-11 03:55:54 来源:igfitidea点击:
Java replaceAll("\\s+") vs replaceAll("\\\\s+")
提问by Maxim Gotovchits
What's the difference between replaceAll("\\s+")
and replaceAll("\\\\s+")
? Usually I use \\s+
but sometimes I see \\\\s+
.
replaceAll("\\s+")
和 和有replaceAll("\\\\s+")
什么区别?通常我使用,\\s+
但有时我会看到\\\\s+
.
采纳答案by TheLostMind
\\s+
--> replaces 1 or more spaces.
\\s+
--> 替换 1 个或多个空格。
\\\\s+
--> replaces the literal \
followed by s one or more times.
\\\\s+
-->\
一次或多次替换后跟 s的文字。
Code:
代码:
public static void main(String[] args) {
String s = "\sbas def";
System.out.println(s);
System.out.println(s.replaceAll("\s+", ""));
System.out.println(s.replaceAll("\\s+", ""));
}
O/P :
开/关:
\sbas def
\sbasdef
bas def