java iterate through map

Solutions on MaxInterview for java iterate through map by the best coders in the world

Search
showing results for - "java iterate through map"
Léo
09 Jan 2018
1// 1. for-each with Entry
2Map<Integer, Integer> map = new HashMap<Integer, Integer>();
3for (Map.Entry<Integer, Integer> entry : map.entrySet()) {
4    System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());
5}
6
7
8// 2. for-each with key or value each (faster)
9Map<Integer, Integer> map = new HashMap<Integer, Integer>();
10//iterating over keys only
11for (Integer key : map.keySet()) {
12    System.out.println("Key = " + key);
13}
14 
15//iterating over values only
16for (Integer value : map.values()) {
17    System.out.println("Value = " + value);
18}
19
20
21// 3. Using Iterator
22Map<Integer, Integer> map = new HashMap<Integer, Integer>();
23// With Generic
24Iterator<Map.Entry<Integer, Integer>> entries = map.entrySet().iterator();
25while (entries.hasNext()) {
26    Map.Entry<Integer, Integer> entry = entries.next();
27    System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());
28}
29
30// No Generic
31Map map = new HashMap();
32Iterator entries = map.entrySet().iterator();
33while (entries.hasNext()) {
34    Map.Entry entry = (Map.Entry) entries.next();
35    Integer key = (Integer)entry.getKey();
36    Integer value = (Integer)entry.getValue();
37    System.out.println("Key = " + key + ", Value = " + value);
38}
39
source
Johanna
04 Sep 2016
1Map<String, Integer> items = new HashMap<>();
2items.put("A", 10);
3items.put("B", 20);
4items.put("C", 30);
5items.put("D", 40);
6items.put("E", 50);
7items.put("F", 60);
8
9items.forEach((k,v)->System.out.println("Item : " + k + " Count : " + v));
10
11items.forEach((k,v)->{
12	System.out.println("Item : " + k + " Count : " + v);
13	if("E".equals(k)){
14		System.out.println("Hello E");
15	}
16});
source
Lilly
06 Mar 2020
1for (Map.Entry<String, Object> entry : map.entrySet()) {
2    String key = entry.getKey();
3    Object value = entry.getValue();
4    // ...
5}
source
similar questions
java foreach mapjava iterate hashmaphow to iterate hashmap javajava loop hashmaphow to iterate hashmap in javaloop hash mapjava iterate through hashmapforeach hashmap javaforeach map javaiterate map in java 8 using streamjava for mapiterate hashmap javaforeach loop java values hashmapiterating over a hashmap
queries leading to this page
for each entry in map javamap each itemjavascript map foreachjava hashmap loop through valuesjava map loopingiterating hashmap java 8for each in maparraylist map foreach javaiterate through keys of java mapjava loop thru maphashmap keyset for loopiterate a map in for loopjava map for loophow to loop over map in javajava map eachjava map foreach valuemap foreach java exmapletreemap foreach java 8iterating through an hashmap javahow to iterate over map keysin javalooping throuhg map javaforeach in java 8 using maphow to iterate a map in javamap in for loop javaitterate through a map javajava iterate map functional styleiterating through map in javafor map java 8java best loop for mapiterate over java hashmapjava 8 lambda update map using iteratorforeach hashmap javaloop over map javajava iterate over map keyshow to iterate into map in java8iterating through hashmap javaloop through map in java entryread map in java 8iterator over a map in javaforeach in map javaforeach map javamap or foreach in java 3fiterating map in javause map iterator javatraverse map in javamap iterate java 8for each key map javajava map each element in arrayfor each in map javajava for each map valuejava iteration mapmap java loopmap iterator while javaiterate map keys 2b javajava foreach mapprinting map javaiterate through map javajava iterate over mapmap and foreach javajava 8 map foreachjava itterate maphow to loop through a map javaiterator to map javaiterate in java 8 mapforeach map java 8iterate map using stream in java 8 and collect valueforeach java hashmapjava map looping exampleiterate a map using java 8best map for iterating over javahow to loop in java array using map functionjava for each over mapiterating through mapjava 8 foreach map entryinitialize iterator over map 2b javajava loop through map of mapsiterating through map javaloop and mapjava 8 iterate mapforeach element in map javaiterate in a maphashmap loop in java 8map for each loopmap iteration in javafor loop threw a map javatraverse throuh map javalambda expression for loop in map javaiterate in map in javajava map foreachjava8 loop through mapprint map in java 8foreach loop java map 3cstring 2cstring 5b 5d 3eloop througha a map java 8can you loop through a java maplooping through map havafor loop hashmap java 11how to iterate a map in java using streamiterate through a mapjava map foreach 28hmap foreach javamap loop in javamap for eachlooping through map in java 8map foreach java 8foreach java mapfor each map javajava 8 map iterationmap and for eachmap and iterator in javaloop through a hashmap in javajava stream foreach maphow to map over a hashmapforeach key value map javajava iterate hashmapiterating from maploop through hashmap java 8java 8 loop throth mapiterare map in javahow to loop hashmap in java 8for each through mapwhat is map in java how to iteratejava loop through map keyshow to loop through map in javaiterate the map in java 8java 8 loop in maplooping map in java 8loop the map in java 8java iterate map and return stringiterate over a map in javajava loop trough maphow to iterrate over a map in javaforeach for map in javaforeach hashmap java 8loop on map javajava8 iterate over a mapmap iterate in javajava 8 loop through mapmap for loop javajava 8 iterate map key valuehow to iterate a hashmap in javaentryset in java 8foreach in map javamap iteration in java 8java 8 way to iterate maphow iterate map in javaiterate on map javahow to iterate over a maptraverse map in java for particular elementhow to loop through a hash maploop through a haschmap javamap iterator java 8iterate over map itjava how to loop over maptraverse through map in javaiterate hashmap in javahow to iterate on map in javahow do i efficiently iterate over each entry in a java mapjava stream loop through mapmap keys foreach javaiterate java mapstring map print java forjava 8 loop maphow to loop through a map in javafor each loop in map javaiterate hashmap in java 8java iterate through elements of mapjavascript map foreach examplefor each for maps javajava iterate hasmaplop through map javajava loop thorugh mapiterate map foreach in javaiterate a maptraverse a map javaiterator on map javaiterating over map not working jsloop through all entries in map ajvaiterate in map javamap or foreach in java stream 3fjava iterate over map key and valuejava map loophow to get parse through list of map using stream javajava for loop mapfor each loop map javahow to do loop on map in java 8java iterate map with foreach foreach map javaiterating over hashmapmap for each mathodjava for loop hashmaphow to iterate map using iteratoriteratively getting elements in mapiterating through a map javahow to iterate hashmap in java 8iterate throught mapfor loop for map in java 8how to use a for each loop on a map javajava looping through maploop throuh a map in javaeach mapjava 8 for loopjava traverse map valuesiterate only through values hashmapiterate through map jabamap foreach javaloop throught map in javaiterate map in java 8how to iterate through a map in javafor each and maplooping hashmap java 8for each on maploop over map java 8iterate over map using java 8iterating over map in javaiterate through hashmap javaiterate though hashmap avaiterate over keys of map javajava iterate over a mapjava iterate through hashmaphow to traverse map in javamap java foreachiterate map in java using iterator from backiterate over a map java 8using for each on a mapjava how to iterate through a mapjava foreach on mapjaav traverse through maptraverse a map of map in javaijava iterate mapways of looping through map javaloop over hashmapforeach method in map javascriptloop through map javaitirate map javamap java iteratorjava foreach over mapjava hashmap checkvalue for loopforeach lambda hashmap print map javahow to loop map in javajava 8 foreach mapiterating over map javajava map foreach functionjava map itterationiterate map java 8apply foreach on map in javaiterate through the map bject in javahow to loop through a mapjava map foreach with key and valueiterate map using java8iterate hashmapiterate through hashmap objects javajava hashmap foreachhow to use foreach map javahow to iterate over the values of a map in javajava loop mapjava map foreachiterate map and get values in java 8for each java of a maphow to iterate over a map in java with indexesiterate a map in javamap iterate using java 8 foreachmap get 28 29 for each javamap foreach javaiterating in map javafor loop hash mapjava map iteratorashmap iterate throughiterating over a map javaforeach a map javahow to iterate through map in javajava iterate over keys in maphow to loop through using hashamaphow to loops through a map in javaiterate over map keys in javahashmap iterator java 8looping map in java 8 get valueshow to loop java has mapjava 8 iterate over mapfor loop java maphow to iterate over a map in javaiterating a map in java8map and foreach java 8iterate through mapjava iterate in map of mapsjava map for eachiterate over maps in javamap iterate key and value java 8java 8 map iteratorfor loop inside using a map in javajava map foreach consumerhow to use foreach in map javahow to iterate a mapiterate over map in java 8stream make foreah on map java 8loop through map within map javamap iterator javamap implementation using eachjava best practice to iterate over mapfor loop for map javaloop in map javajava map foreach exampleloop over java keystraverse through map javaiterate through map java 8looping through a map in javaiterating through a mapiterate a hashmapiterate through map in javaiterate through map with various values javamap with for loop in javaloop a map in java 8java map foreach variablejava iterate map foreachfor loop hashmap java 7loop through all the values in a map javaiterate map values in java 8java iterate over map with foreachiterate map javajava 3a foreach in maploop map in java 8foreach mapiterate map in java 8 foreachiterate over a map javaiterate over a mapiterate over map javaiterate a map streamforeach map object javaloop through map in order jvajava map for each keyiterate over hashmap javaiterate over hashmap java 8how to do a foreach loop with a map in javaiterating through map in java 8iterate through map and get values java 8iretarte over java haspmaphow to loop over a map in javahow to iterate map in java 8loop through map entry javausing a for loop to map javaiterate map of map in java 8java loop through hashmapiterator for hashmapiterate in map java 8java map foreach key valuejava hashmap iterate over keys with out known keyiterator map javaloop through java mapiterate through hashmap values javawhat is the difference between map and foreachjava loop over maphow to iterate through map in java 8iterate with hashmaptraverse the map in javaitterate map javaforeach on map in javainteger map loopget map with for each javaiterate hasmapforeach value in map javafor loop for map in javaiterate over values of map javajava iterate through mapmap foreach in java 8java loop through every value in mapiterate over java mapjava iterate a maphow to use foreach for map in java 8iterating on map in javaloop hashmap java 8how to iterate map values in java 8java to for each on maploop iteration in java maphashmap java android loop throughprint map in javahow to traverse in java mapsjava iterate over hashmapiterate map in java8java stream iterate through maploop on map java 8cycle through map javatraverse map entry javaiterate over a hashmap in java 8hashmap getkeyiterator methodjava itirate throu hasmapjava iterate map of mapsfor each java string mapiterate over values in map javafor each with maps javaandroid hashmap loophow to iterate map in javaiterate through hashmap and get key and valueforeach and map java 8how to iterate map using stream in javajava map loop valueshashmap in java iteratehashmap java iteratoriterate over map in order javajava 8 iterate hashmaploop through a java maploop over values of a map javajava foreach key in mapiterate trhough map keys javamap for each javajava return foreach from a mapjava foreach map entryhow to iterate through elements in a map javaiterator in java mapjava loop through a mapiterating through a trere map javajava hashmap loop keysjava 8 loop over mapjava loop through maphashmap iteration in java 8java for loop using map entryset determine if first entryforeach with map javajava 8 hasmap iterationiterate jav8 map java 8map iterate javajava 8 how to iterate a mapjava hashmap for loopcreate and loop map in javaloop thorugh hashmap javajava iterate mapjava for each entry in maploop map javahashmap java foreachloop through hashmap javaiterate map in javajava loop a maptraverse map javatraverse in map javahow to traverse a map in javaiterate over map entries javahow to iterate through map javaiterate through map using stream javajava iterate over map java 8iterating a map in javatraverse on map in javafor each with mapiterate through a map javahashmap entryset 28 29 iterator 28 29 in javajava foreach for maphashmap foreach java 8loop through hashmap keysfor each map entry javaloop through map in javajava map stream iteratemap in java for each iterate map using val in java 8iterate through map values javamap loop javahow to itereate through a mapjava for each key of mapfor loop map javakey value iteration java8 collect datafor loop get hashmap valuesjava iterate map valuesforeach loop for map in java 8for loop over map javamap iterator in javajava 8 collections print map foreachhashmap iterate foreach loop java8hashmap foreach javaloop trough a map javalooping map in javaloop over hashmap javaiterating map in java 8java 8 best way to iterate maphow to iterate over map in javaforeach for map javaforeach map entry in javahow to loop through keys in a map in javause map foreach javajava map iterateloop map java examplejava printmapiterate a map javatraverse a map in javajava get iterator over mapmap iteration in java 8 examplemap foreach java examplehow to iterate through hashmap in java 8iterate with hashmap javajava 8 map iterate with foreachforeach in map java 8iterate over map in javaloop inside a maping javaiterate java map valuesloop through a map javajava 8 map foreach exampleloop over map in javaandroid java loop through hash mapjava foreach hashmapiterate throught hash mapkey value iteration java8maphash foreach javaforeach map entry javaloopy system mapfor each mapjava iterate in mapiterate over hashmap values in javaiterate through map keyvalue javahow to iterate through a hashmap in javajava loop in maphow to use foreach and map in java 8does map do a for eachiterate through all keys in map javaforeach on map javaiterate thorugh map javahow to print out a map javajava for each in a map looping a map in java 8iterate over map java 8iterator over map in javajava foreahc mapiterating through map with index in javamaps foreach javahow to loop though a map in javaandroid iterate over mapfor each hashmap java 8 examplejava iterate through map