i am trying to remove the duplicate values from HashMap by the following code but it is thwoing following exception java.util.ConcurrentModificationException how to remove duplicate values ? import java.util.Enumeration; import java.util.HashMap; import java.util.Iterator; import java.util...
M + 5 A JWell well well nice tryy 20th May 2018, 8:19 AM Mirul Makenkov II + 2 It is right but I am talking about Lambda Hashmap. 8th May 2018, 6:01 AM A͢J M 0 By default HashMap does not allow duplicates keys.
HashSet class implements the Setinterface, backed by a hash table (actually aHashMapinstance). It makes no guarantees as to the iteration order of the set; in particular, it does not guarantee that the order will remain constant over time. This class permits the null element. Use methodadd...
* in order to remove the duplicate elements and * to preserve the insertion order. */lhs.addAll(al);// Removing ArrayList elementsal.clear();// Adding LinkedHashSet elements to the ArrayListal.addAll(lhs);// Displaying ArrayList elementsSystem.out.println("After:");System.out.println("Arr...
HashMap creationHashMap is created with new keyword. Map capitals = new HashMap<>(); We specify the types of keys and values between angle brackets. Thanks to type inference, it is not necessary to provide types on the right side of the declaration. ...
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arraylist - remove arraylist - replace arraylist - join arraylist - size arraylist - removeAll arraylist - iterator arraylist - to set arraylist - hashmap arraylist - sort descending arraylist - guide arraylist - with values arraylist - concurrent modification arraylist - to array...
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// Map: An object that maps keys to values. A map cannot contain duplicate keys; each key can map to at most one value. Map<String, Integer> crunchifyMap = new HashMap<>(); try { while ((inputLine = bufferedReader.readLine()) != null) { // split(): Splits this string around...