How to replace dollar character with backslash dollar in a string

问题

I have a String like this:

String str = "aLnx5$bK$#C4EFg"; 

And I want to replace all the dollar $ characters with backslash dollar \$, in order to get:

String expectedString = "aLnx5\$bK\$#C4EFg";

回答1:

String str = "aLnx5$bK$#C4EFg";
str = str.replace("$", "\\$");

回答2:

try String.replace function that replace any sequence character :

    String str = "aLnx5$bK$#C4EFg";
    String newStr = str.replace("$","\\$");

回答3:

you can write this to replace the $ with \$

string newstring = str.replace("$", "\\$");

for more info see this java doc: string.replace

来源：https://stackoverflow.com/questions/24802177/how-to-replace-dollar-character-with-backslash-dollar-in-a-string