AbstractList in Java with Examples
The AbstractList class in Java is a part of the Java Collection Framework and implements the Collection interface and the AbstractCollection class. It is used… Read More »
Tag Archives: Java-Collections
AbstractQueue in Java with Examples
The AbstractQueue class in Java is a part of the Java Collection Framework and implements the Collection interface and the AbstractCollection class. It provides skeletal… Read More »
ConcurrentSkipListSet in Java with Examples
The ConcurrentSkipListSet class in Java is a part of the Java Collection Framework and implements the Collection interface and the AbstractSet class. It provides a… Read More »
ConcurrentLinkedQueue in Java with Examples
The ConcurrentLinkedQueue class in Java is a part of the Java Collection Framework and implements the Collection interface and the AbstractCollection class. It is used… Read More »
ConcurrentLinkedDeque in Java with Examples
The ConcurrentLinkedDeque class in Java is a part of the Java Collection Framework and implements the Collection interface and the AbstractCollection class. It is used… Read More »
BlockingQueue Interface in Java
BlockingQueue interface in Java is added in Java 1.5 along with various other concurrent Utility classes like ConcurrentHashMap, Counting Semaphore, CopyOnWriteArrrayList etc. BlockingQueue interface supports… Read More »
Remove all occurrences of an element from Array in Java
Given an array and a key, the task is to remove all occurrences of the specified key from the array in Java. Examples: Input: array… Read More »
Reverse elements of a Parallel Stream in Java
Given a Parallel Stream in Java, the task is to reverse its elements. Examples: Input: Parallel Stream = {11, 22, 33, 44} Output: {44, 33,… Read More »
Difference between ArrayList and HashSet in Java
Here are couple of differences between ArrayList and HashSet. Inheritance: Implementation: Implementation : ArrayList implements List interface while HashSet implements Set interface in Java. Internal… Read More »
Get first and last elements from ArrayList in Java
Given an array list, find the first and last elements of it. Examples: Input : aList = {10, 30, 20, 14, 2} Output : First… Read More »
Split a list into two halves in Java
Given a list, we need to split into two news lists in Java. Input : list = {1, 2, 3, 4, 5, 6} Output :… Read More »
How to Remove Duplicates from ArrayList in Java
Given an ArrayList with duplicate values, the task is to remove the duplicate values from this ArrayList in Java. Examples: Input: List = [1, 10,… Read More »
How to sort TreeSet in descending order in Java?
Given a TreeSet in Java, task is to sort elements of TreeSet in Descending Order (descreasing order). Examples: Input : Set: [2, 3, 5, 7,… Read More »
How to add element at first and last position of linked list in Java?
Given a Linked List in Java, the task is to insert elements at first and last position in this LinkedList. Examples: Input: LinkedList: [‘e’, ‘e’,… Read More »
How to check if a key exists in a HashMap in Java
Given a HashMap and a key in Java, the task is to check if this key exists in the HashMap or not. Examples: Input: HashMap:… Read More »
