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Is there any better way to find the duplicate words count in a file using Java. I have found one solution using Map like below :

while ((line = br.readLine()) != null) {
                StringTokenizer st = new StringTokenizer(line, " ");
                while (st.hasMoreTokens()) {
                    String tmp = st.nextToken().toLowerCase();
                    if (map.containsKey(tmp)) {
                        map.put(tmp, map.get(tmp) + 1);
                    } else {
                        map.put(tmp, 1);
                    }
                }
            }

Taken from OnlineTutorialsPoint
Looking for bettor logic interms of performance.

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