How to remove multiple line breaks from a string

问题

given a string i need to check if there are multiple line breaks (\n). If there are i need to convert them to one single line break.

Can you please show me code that does this? thanks!

回答1:

try this

s = s.replaceAll("(\r?\n){2,}", "$1");

来源：https://stackoverflow.com/questions/22787000/how-to-remove-multiple-line-breaks-from-a-string