containsKey doesn't match the urls

Question

I am trying to store hyperlink as a key in map , i am using multimap

 private Map<String, List<String>> record=new HashMap<String, List<String>>();

and i am using following way to check whether the hyperlink is already exist in the map or not

 record.containsKey(url)

But even if the url is exist in a map , it is returning false for the same url which is already there in the map. so how can i solve this issue

the link i am storing is

 http://101.13.20.343/test/wav/uploads/372.wav

There is no reason why it would not work. Try and post an SSCCE that replicates your issue. — assylias
– assylias, Commented Apr 24, 2012 at 20:03
Try printing your map keys with prefixed and suffixed with ---key--- and if you see a space between them, then the blank space will be the issue. — Tito
– Tito, Commented Apr 24, 2012 at 20:10
Hell , i was adding keys inside a inner loop so thts why it was create a new object every time my mistake but +1 for all the efforts — Hunt
– Hunt, Commented Apr 24, 2012 at 20:17

ant · Accepted Answer · 2012-04-24 20:05:27Z

This works for me :

public static void main(String[] args) { Map<String, List<String>> record=new HashMap<String, List<String>>(); record.put("http://101.13.20.343/test/wav/uploads/372.wav", new ArrayList<String>()); System.out.println(record.containsKey("http://101.13.20.343/test/wav/uploads/372.wav")); }

kuriouscoder · Accepted Answer · 2012-04-24 20:06:38Z

2

Did you trim the whitespaces at each end? In some cases, this might be it?

answered Apr 24, 2012 at 20:06

kuriouscoder

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