Question

I want to find words (that means whitespace before and after) based upon a search string
for example:

String s = "sdaaf fd hgfaaf ghjfada dgffaasdf";

and i want to find all the word that contain the String "aa"
the answer will be the words:

"sdaaf" , "hgfaaf" , "dgffaasdf"

Answer 1

You don’t solve this problem via regex, as there is a more direct way to go about it.

String phrase = "aa";
String s = "sdaaf fd hgfaaf ghjfada dgffaasdf";  
String[] words = s.split(" ");  
List<String> wordList = new ArrayList<String>();
for(String word : words)  
{  
    if(word.contains(phrase))
    {
       wordList.add(word);
    }  
]