What's the best way to check if a String contains a URL in Java/Android?

Question

What\'s the best way to check if a String contains a URL in Java/Android? Would the best way be to check if the string contains |.com | .net | .org | .info | .everythingelse

Answer 1

After looking around I tried to improve Zaid's answer by removing the try-catch block. Also, this solution recognizes more patterns as it uses a regex.

So, firstly get this pattern:

// Pattern for recognizing a URL, based off RFC 3986
private static final Pattern urlPattern = Pattern.compile(
    "(?:^|[\\W])((ht|f)tp(s?):\\/\\/|www\\.)"
            + "(([\\w\\-]+\\.){1,}?([\\w\\-.~]+\\/?)*"
            + "[\\p{Alnum}.,%_=?&#\\-+()\\[\\]\\*$~@!:/{};']*)",
    Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL);

Then, use this method (supposing str is your string):

    // separate input by spaces ( URLs don't have spaces )
    String [] parts = str.split("\\s+");

    // get every part
    for( String item : parts ) {
        if(urlPattern.matcher(item).matches()) { 
            //it's a good url
            System.out.print(""+ item + " " );                
        } else {
           // it isn't a url
            System.out.print(item + " ");    
        }
    }