Initial data commit

Task/Word-frequency/Java/word-frequency-2.java

@@ -0,0 +1,30 @@
+void printWordFrequency() throws URISyntaxException, IOException {
+    URL url = new URI("https://www.gutenberg.org/files/135/135-0.txt").toURL();
+    try (BufferedReader reader = new BufferedReader(new InputStreamReader(url.openStream()))) {
+        Pattern pattern = Pattern.compile("(\\w+)");
+        Matcher matcher;
+        String line;
+        String word;
+        Map<String, Integer> map = new HashMap<>();
+        while ((line = reader.readLine()) != null) {
+            matcher = pattern.matcher(line);
+            while (matcher.find()) {
+                word = matcher.group().toLowerCase();
+                if (map.containsKey(word)) {
+                    map.put(word, map.get(word) + 1);
+                } else {
+                    map.put(word, 1);
+                }
+            }
+        }
+        /* print out top 10 */
+        List<Map.Entry<String, Integer>> list = new ArrayList<>(map.entrySet());
+        list.sort(Map.Entry.comparingByValue());
+        Collections.reverse(list);
+        int count = 1;
+        for (Map.Entry<String, Integer> value : list) {
+            System.out.printf("%-20s%,7d%n", value.getKey(), value.getValue());
+            if (count++ == 10) break;
+        }
+    }
+}