Java: String replace doesn't find [closed]

问题

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Closed 7 years ago.

mystring.replace() doesn't find everything in my text e.g:

replace = (CalendarInfo.Monday + " " + String.valueOf(dayofmonth) + " " + String.valueOf(CalendarInfo.Month[monthofyear]).toString());
                   str= str.replace(replace, "Hello");

I've check the str and the replace but replace still doesn't do anything! str totally have replace string in it.

So why doesn't replace replace!?

回答1:

String str = "abcd".replace("ab", ""); //str is "cd"

That means your code works basically. But your replace string is not exactly in your source string.

回答2:

Probably because your assumption is wrong.

Maybe different count of (white) spaces, or different code (0x20 or 0xa0), or tab "\011"

来源：https://stackoverflow.com/questions/10144695/java-string-replace-doesnt-find