linkedhashmap

"LinkedHashMap" in C# 3.0

I wonder if there is a counterpart to java.util.LinkedHashMap in C#? (ie. the elements are (re)ordered automatically if I access an element. (boolean accessOrder) ). ...

Soft reference LinkedHashMap in Java?

Is there softreference-based LinkedHashMap in Java? If no, has anyone got a snippet of code that I can probably reuse? I promise to reference it correctly. Thanks. ...

How can I add the keys of a LinkedHashMap to a JList?

I have a LinkedHashMap<String,Object> and was wondering what the most efficient way to put the String portion of each element in the LinkedHashMap into a JList. ...

How do I get a keyIterator for a LinkedHashMap?

By looking at the source code for LinkedHashMaps from Sun, I see that there is a private class called KeyIterator, I would like to use this. How can I gain access? ...

What are the pros and cons of LinkedHashMaps vs. LinkedHashSets?

I was just wondering if someone could espouse for me the main benefits for choosing one over the other and the detriments that come with that choice. ...

How to sort a LinkedHashMap by its value class's field?

I use the following lines to sort a LinkedHashMap, but not all items are sorted, anything wrong ? LinkedHashMap<String,PatternData> statisticsMap; // fill in the map ... LinkedHashMap<String,PatternData> sortedStatisticsMap=new LinkedHashMap<String,PatternData>(); // Sort it by patternData's average ArrayList<PatternData> statis...

Does entrySet() in a LinkedHashMap also guarantee order?

I am using a linkedHashMap to guarantee order when someone tries to access it. However, when it comes time to iterate over it, does using entrySet() to return key/value pairs guarantee order as well? No changes will be made while iterating. EDIT: Also, are there any adverse effects from iterating through the map by iterating through its...

How to keep the order of elements in hashtable

I have a hashtable . values() method returns values in some order different from the order in which i am inserted.How can i get the values in the same order as i inserted?Using LinkedHashmap is an alternative but it is not synchronized. ...

How to implement ConcurrentHashMap with features similar in LinkedHashMap?

I have used LinkedHashMap with accessOrder true along with allowing a maximum of 500 entries at any time as the LRU cache for data. But due to scalability issues I want to move on to some thread-safe alternative. ConcurrentHashMap seems good in that regard, but lacks the features of accessOrder and removeEldestEntry(Map.Entry e) found in...

java linkedhashmap get first or last entry

I have used LinkedHashMap because it is important the order in which keys entered in the map. But now I want to get the value of key in the first place (the first entered entry). Should there be a method like first() or something like that? Do i need to have an iterator to just get the first key entry? That is why i used LinkedHashMap!...

Java LinkedHashMap: what's the difference in these two?

EDIT: The entire code and database creation script can be found from http://gitorious.org/scheator . The database script is in Schema/. I have the following Java code: A LinkedHashMap defined in an abstract class as LinkedHashMap<Object, Data> list; A descendant class that initializes this list like this: list = new LinkedHashMap<...

Does a HashMap retain the order of its elements on the next read if it is constructed and "filled" as a LinkedHashMap?

Suppose I have a Java method that returns a HashMap object. Because a LinkedHashMap is a subclass of HashMap, I can return a LinkedHashMap from this method just fine. On the next "read" action (no adding/removing/modifying of K/V pairs), would iterating over the keys of the resulting method (which returns a HashMap) go in the same ord...

permute data for a HashMap in Java

hi i have a linkedhashmap and i need to permute (change the key of the values) between 2 random values example : key 1 value 123 key 2 value 456 key 3 value 789 after random permutation of 2 values key 1 value 123 key 2 value 789 key 3 value 456 so here I permuted values between key 2 and key 3 thank you; sample of the code of m...

serialize/deserialize a LinkedHashMap (android) java

So i want to pass a LinkedHashMap to an intent. //SEND THE MAP Intent singlechannel = new Intent(getBaseContext(),singlechannel.class); singlechannel.putExtra("db",shows1);//perase to startActivity(singlechannel); //GET THE MAP LinkedHashMap<String,String> db = new LinkedHashMap<String,String>(); db=(LinkedHashMap<String,String>) ge...

Grails Object --> LinkedHashMap converter

Hello, Like the JSON converter, is there any easy way to convert an object into LinkedHashMap. The JSON string is constructed as def query = new JSON(cmd).toString() anything similar.. thanks.. ...

How is the implementation of LinkedHashMap different from HashMap?

If LinkedHashMap's time complexity is same as HashMap's complexity why do we need HashMap? What are all the extra overhead LinkedHashMap has when compared to HashMap in Java? ...

Does Java's LinkedHashMap maintain the order of keys?

When LinkedHashMap.keySet() is called, will the order of the Set returned be the same as the order the keys were added in? ...

cast LinkedHashMap to HashMap in groovy

How do I convert LinkedHashMap to java.util.HashMap in groovy? When I create something like this in groovy, it automatically creates a LinkedHashMap even when I declare it like HashMap h = .... or def HashMap h = ... I tried doing: HashMap h = ["key1":["val1", "val2"], "key2":["val3"]] and def HashMap h = ["key1":["val1", "val2"],...