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Learn to use Queue in Java Collections Framework

In this article, we will take a look at how to use the Queue class in Java Collections library. This is useful as one can directly use queue without natively implementing it

Software Engineering

Working with Set in Java like a master

Set is a data structure that is used as a collection of objects. Java supports it through its Java Collection library.

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Map in Java

The java.util.Map interface represents a mapping between a key and a value. The Map interface is not a subtype of the Collection interface. Therefore it behaves a bit different from the rest of the collection types.

Software Engineering

List in Java

There is a List interface in Java which is a child interface of Collection. The List interface supports access, insertion, deletion of the elements. Each element in List has its own index, starting at 0, then 1 and so on. To create List objects we have ArrayList() LinkedList() Vector() and Stack()

Software Engineering

HashMap in Java

In Java, HashMap is a Map based collection class that is used for storing Key and value pairs which is denoted as HashMap. It does not maintain order of elements, allows one null key, multiple null values, is not thread safe, default size is 16, default load factor is 0.75 JDK1.7, JDK1.8

java collection

Java Collections Framework: LinkedList

Reading time: 15 minutes Properties Java LinkedList Methods Implementations Java LinkedList is an implementation of the List and Deque interfaces. It is one of the frequently used List implementation class. It extends AbstractSequentialList

java collection

Java Collections Framework: ArrayList

Java ArrayList is one of the most widely used Collection class. java.util.ArrayList class implements java.util.List interface. Java ArrayList also implements RandomAccess, Cloneable and Serializable interfaces. Java ArrayList class extends AbstractList class that the skeleton implementation of list

java collection

Java Collections Framework: Iterable Interface

The Iterable interface (java.lang.Iterable) is the root interface of the Java collection classes. The Collection interface extends Iterable interface, so all subtypes of Collection implement the Iterable interface. This interface is to represent structures whose value can be traversed one by one.

java collection

Java Collections Framework: Collection Interface

The Collection interface (java.util.Collection) is one of the root interfaces of the Java collection classes. A collection represents a group of objects known as its elements. The following 6 interfaces extends the Collection interface List, Set, SortedSet, NavigableSet, Queue, and Deque.