LinkedHashMap is a Hash table and linked list implementation of the Map interface in the Java Standard library. This implementation provides a predictable iteration order, in contrast with the unspecified ordering provided by HashMap, which is normally the order in which keys were inserted into the map.
Questions tagged [linkedhashmap]
703 questions
0
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1 answer
java.lang.ClassCastException: com.google.gson.internal.LinkedTreeMap cannot be cast to model class android
I am passing the response of an API call (Retrofit used) to a class and trying to cast it to my model class. Since i am using retrofit for the API call, it generates a linked hashmap based on the response from the server prior to convert it into…
Pramod Moolekandathil
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1 answer
How to add multiple buttons to a tilepane?
I have a tilepane inside the center of a borderpane. For every entry in a linked hashmap I want to add a button to the tilepane. This tilepane already exists in the fxml file and has the fx:id fieldContainer.
If I add a key-value pair one at a time,…
Isoldhe
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1 answer
How to update every value of the keyset in a LinkedHashMap in Scala, having a LinkedHashMap[Int, ListBuffer[Int]]?
I have a LinkedHashMap of type:
var map: LinkedHashMap[Int, ListBuffer[Int]] = ((1 -> (2, 1)), (2 -> 2), (3 -> (5, 3)))
I want to add an element to every list of every key, let's say i want to add "6" in order to have:
((1 -> (6, 2, 1)), (2 -> (6,…
Andrea
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2 answers
How to merge two LinkedHashMaps[Int, ListBuffer[Int]] in Scala?
I found this method:
def merge[K, V](maps: Seq[Map[K, V]])(f: (K, V, V) => V): Map[K, V] = {
maps.foldLeft(Map.empty[K, V]) { case (merged, m) =>
m.foldLeft(merged) { case (acc, (k, v)) =>
acc.get(k) match {
case…
Andrea
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- 7
0
votes
2 answers
Trying to sort a linked HashMap by value
letterFrequencies.entrySet().stream()
.sorted(Map.Entry.comparingByValue().reversed())
.collect(Collectors.toMap(Entry::getKey, Entry::getValue));
I'm currently using this to try but I get an error which says The method…
KONADO
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Read data from nested LinkedHashMap
1st level linkedhashmap
LinkedHashMap> level_1 = new LinkedHashMap<>();
2nd level linkedhashmap`
LinkedHashMap level_2 = new LinkedHashMap<>();
level_2.put("abcd", R.drawable.abcd);
put…
Dharshan Siva
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votes
1 answer
Hashmap not receiving expected value
Sorry if this is a dumb question, I'm very new to working with maps.
static void redacted(Map, List> whatComesNext, List text) {
List maurice = new ArrayList(); //feeds the double string key to the…
user2709168
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Get java.lang.IllegalArgumentException: argument type mismatch for some but not all attempts to change JSON attribute value
IDE: IntelliJ IdEA 2017.2.4 Language: Groovy 2.4.11 Test Framework: Spock 1.1-groovy-2.4
New to all of the above. No prior experience in Java either. First post here and I actually read the intro and guidelines and trying my best to follow.
JSON…
SleepyD
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How To Reverse The Order Of LinkedHashMap Elements In Scala
Is there any elegant way to reverse the elements' order of LinkedHashMap in Scala?
For instance, I have a LinkedHashMap[Integer, String] like:
[1, "one"]
[2, "two"]
[3, "three"]
What is the best way to get a LinkedHashMap[Integer, String] like:
[3,…
ClassNotFoundException
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votes
2 answers
Hash Map Sorting in java8
I have following HashMap
"1":
{
"profilePic":null,
"roleNo" : "12"
},
"2":
{
"profilePic":null,
"roleNo" : "1"
}
I want the output as below
"2":
{
"profilePic":null,
"roleNo" : "1"
},
"1":
{
…
ankit
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votes
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Why passing the load factor on specifying the access order on the constructor?
I was wondering why when does the constructor of a LinkedHashMap that the client code can specify if is access ordered expect a loadFactor?
Is there any particular reason for this design instead of using a default factor?
Jim
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2 answers
ArrayList or Multiple LinkedHashMap
I have an ArrayList of a custom object A. I need to retrieve 2 variables from A based on certain conditions. Should I simply use for loop to retrieve data from the list each time or create 2 LinkedHashMap and store the required variable in it as…
yonikawa
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3 answers
Retain Column Order in Database Connector in Mule
How can i force the database connector to return LinkedHashMap to ensure that resultset is in same order as in db?
vijay dhanakodi
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4 answers
How to display keys from Map?
I want to add x elements (just keys) from sorted map to list and display them.
public static ArrayList miZrodzicowIpotomstwa(Map mapVectFunc_tmp, int x)
{
ArrayList listaMi = new ArrayList<>();
ArrayList…
Karolina Cabaj
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votes
1 answer
Return values from database queries into a LinkedHashMap
I keep getting one value from this LinkedHashMap it's either the first [ if (resultset.next()) ] or the last [ while(resultset.next()) ], only one result is coming back but I want the full map. How do I return all rows in the table that fit my…
