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POHow to iterate through Nested Map and Multiset? - Java/Guava
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  1. POHow to iterate through Nested Map and Multiset? - Java/Guava
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    copied!<p>How should I iterate through a Nested Map with such declaration? </p> <ul> <li><code>Map&lt;String, Multiset&lt;String&gt;&gt;</code></li> </ul> <p>Please suggest if there are other hashmap/list that are more effective way of doing this hash population task?</p> <pre><code>import com.google.common.collect.Multiset; import com.google.common.collect.TreeMultiset; String[] foobarness = {"foo" , "bar", "ness", "foo", "bar", "foo", "ness", "bar", "foo", "ness", "foo", "bar", "foo", "ness", "bar", "ness", "foo", "bar", "foo", "ness"}; String[] types = {"type::1", "type::2", "type::3", "type::4",}; Map&lt;String, Multiset&lt;String&gt;&gt; typeTextCount = new HashMap&lt;String, Multiset&lt;String&gt;&gt;(); Multiset&lt;String&gt; textAndCount = TreeMultiset.create(); for (int i=0; i&lt;types.length; i++) { // I know it's kinda weird but in my task, // i want to keep adding only 1 to the count for each entry. // Please suggest if there is a better hashmap/list for such task. if ((types[i]== "type::1") or (types[i]== "type::3")) { for (String text : foobarness) { // I don't worry too much about how i // populate the Map, it is iterating through // the Map that I have problem with. textAndCount.put(text, 1); } } if ((types[i]== "type::2") or (types[i]== "type::4")) { for (String text : foobarness) textAndCount.put(text, 1); } } </code></pre> <p>So now the hashmap is populated, how do i iterate through that complex nested map? I've tried the code below but I only got the 1st getValue() from my Multiset: </p> <pre><code>Iterator&lt;Entry&lt;String, Multiset&lt;String&gt;&gt;&gt; itTTC = typeTextCount.entrySet().iterator(); while (itTTC.hasNext()) { Map.Entry textCt = (Map.Entry)itTTC.next(); System.out.println(textCt.getKey() + " :\t" + textCt.getValue()); itTTC.remove(); } </code></pre>
 

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