How to add or insert ' (single quotes) for every string in a list in which strings are separated by commas using Java

I have a list as below

[url1,url2,url3,url4] 

I want the above string list to be displayed as : 

'url1','url2','url3','url4'

Solution: 

By Java 8 : list.stream().collect(Collectors.joining("','", "'", "'"));