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7.4

Java Hashmap Sorting

Asked by lcor in Java Standard Tag Library (JSTL) & Server Tags, Java Programming Language

Tags: hashmap, java, sort

I have a sorting issue with a Hashmap. My constraint is that I MUST use the Hashmap and work with existing code. I do a database query and place the results in a Hashmap. When I iterate thru the Hashmap, it loses the original alphabetical sorting done by the database. So, my problem is that I must sort the results coming out of the Hashmap which is then placed into another class.

Here's the code:

Hashmap hm = (database results)
Iterator it = hm.keySet().iterator();

while (it.hasNext()) {
String key = (String) it.next();
STring value = (String) hm.get(key);
<<<------------------I must do alphabetical sorting before
<<<-----------------placing results (value) into this other class
some_other_class.addVAlue(new Integer(value), "title");
}

There isn't a great number of values (most a couple hundred) so if another loop is okay.

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	Title
1	Dumping a HashMap
2	Setting a HashMap to a Collection and …
3	MVC

Java Hashmap Sorting

Asked by lcor in Java Standard Tag Library (JSTL) & Server Tags, Java Programming Language

Tags: hashmap, java, sort

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