hashmap

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Java: How to use a pair of keys for HashMap

From a sql database, I am reading a tabl开发者_StackOverflow中文版e with 2 fields: appName, user. So I may see:[详细]

2023-03-27 06:16 分类：问答
Collection.min Query For HashMap?

I have Declared a HashMap as HashMapminMaxVal = new HashMap(); with K,V as Integer,Float[] Would Like to retrieve the Min value from hashMap. Overriding the Min Function of collection is only solut[详细]

2023-03-27 04:27 分类：问答
Iterating through a HashMap

Okay so i\'m currently working on a searching method, the terms searched are ran through the database and the matching products are added to a hashMap with 2 Integer fields.[详细]

2023-03-27 03:48 分类：问答
Using char[] array in HashMap in java

I am using a HashMap with a ch开发者_高级运维ar array as the key. But when I put the key, value into the HashMap and print it the value printed as the key is some strange value. If I use a string inst[详细]

2023-03-27 02:24 分类：问答
How to get the elements in correct order from iterator()

Here is my code to store the data into HashMap and display the data using iterator public static void main(String args[]) {[详细]

2023-03-26 18:47 分类：问答
Why there is no ConcurrentHashSet against ConcurrentHashMap

HashSet is based on HashMap. If we look at HashSet<E> implementation, everything is been managed under HashMap<E,Object>.[详细]

2023-03-26 16:30 分类：问答
why i can't create a Map of String and generic object

I am trying to do something like this 开发者_运维技巧final Map<String, ? extends Object> params = new HashMap<String, ? extends Object>();[详细]

2023-03-26 07:07 分类：问答
Create HashMap as cache for objects, problem with key object

I\'m new to java, i\'m working width android sdk Im generating a lot of objects which are in 50% te same so i thought that i can implement a simple caching mechanism[详细]

2023-03-26 01:22 分类：问答
Problem with Maps in java

I have a Hashmap which has X number of elements I need to move this map into another map This is what my code looks like[详细]

2023-03-26 01:00 分类：问答
ListView displaying only the final element of a ArrayList(HashMap)

I have an activity class that gets a JSON string by making a query. I parsed the string into a ArrayList(HashMap(String, String)). I am passing this to a ListView. The problem I am facing is while dis[详细]

2023-03-25 22:00 分类：问答