替换Java中的特定字符串

Question

I am having problems with replacing a specific string in a user input string but is not generating the expected output.

String inputString="hellol lol";
String result = inputString.replaceAll("lol", "laugh out loud");
System.out.println("Normal Form:" + result);

Input: hellol lol

Code output: hellaugh out loud laugh out loud

Expected output: hellol laugh out loud

how do I fix this? thanks.

Answer 1

replaceAll() method takes regex to find the matches and replace them. The appropriate regular expression will do your job. Use \\\\blol\\\\b as regex.

inputString.replaceAll("\\blol\\b", "laugh out loud");

Here \\\\b is the word boundary that helps to identify the lol token