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Editor to share with you a sample analysis of HashTable ranking, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to know it!

Recently, in the process of doing the project, parsing XML documents are stored in hashtable, but the values taken out are not in the order I want. I used a method to sort them by key values. It feels good. Post it and have a look.

SortHashtable.java

Import java.util.Arrays

Import java.util.Comparator

Import java.util.Hashtable

Import java.util.Set

Import java.util.Map

/ * *

* @ author qinruixiong 2007-07-22

* modify qinruixiong 2007-07-23

, /

Public class SortHashtable {

/ * *

* @ param args

, /

Public static void main (String [] args) {

/ / TODO Auto-generated method stub

}

/ * *

* method name: getSortedHashtable

* Parameter: Hashtable h introduces the processed hash table

* description: sorts the introduced hashtable.entrySet according to key and returns

, /

Public static Map.Entry [] getSortedHashtableByKey (Hashtable h) {

Set set = h.entrySet ()

Map.Entry [] entries = (Map.Entry []) set.toArray (new Map.Entry [set.size ()])

Arrays.sort (entries, new Comparator () {

Public int compare (Object arg0, Object arg1) {

Object key1 = (Map.Entry) arg0) .getKey ()

Object key2 = (Map.Entry) arg1) .getKey ()

Return ((Comparable) key1) .compareto (key2)

}

});

Return entries

}

}

The above is all the content of this article "sample Analysis of HashTable sorting". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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