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Java-Iterator

15 posts

Previous() Method in Java Collections

Last Updated: 28 October 2025

The previous() method in Java is a part of the ListIterator interface, which allows bidirectional traversal of elements in a list. It moves the cursor one step backward in...read more

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Java-Collections

hasPrevious() Method in Java Collections

Last Updated: 28 October 2025

The hasPrevious() method is provided by the ListIterator interface in Java. It is used to check whether there is a previous element while traversing a list in the reverse ...read more

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Java-Collections

hasNext() Method in Java Collections

Last Updated: 28 October 2025

The hasNext() method is provided by both the Iterator and ListIterator interfaces in Java. It is used to check whether the iteration has more elements before calling the n...read more

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Java-Collections

next() Method in Java Collections

Last Updated: 28 October 2025

The Iterator and ListIterator interfaces provide the next method. It is used to retrieve the next element in a collection while traversing through it. It returns the next ...read more

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Java-Collectors

Replace an Element From ArrayList using Java ListIterator

Last Updated: 03 April 2023

To replace an element from an ArrayList, the set() method of ListIterator interface can be used. set() method of ListIterator replaces the last element which is returned b...read more

Java-Collections

How to Remove an Element from Collection using Iterator Object in Java?

Last Updated: 23 July 2025

Collection in Java is a set of interfaces like List, Set, and Queue. An iterator in Java is used to iterate or traverse through the elements of the Collection. There are t...read more

Technical Scripter

Technical Scripter 2020

Java-Collections

ListIterator in Java

Last Updated: 19 November 2025

ListIterator is a type of Java cursor used to traverse all types of lists, such as ArrayList, LinkedList, Vector, and Stack. It was introduced in Java 1.2 and extends the...read more

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Iterator Interface In Java

Last Updated: 23 July 2025

Java Iterator Interface of java collections allows us to access elements of the collection and is used to iterate over the elements in the collection(Map, List or Set). It...read more

Enumeration vs Iterator vs ListIterator in Java

Last Updated: 15 July 2025

Enumeration is an interface. It is used in the collection framework in java to retrieve the elements one by one. Enumeration is a legacy interface that is applicable only ...read more

Computer Subject

Difference Between

Java-Enumeration

How to iterate over a 2D list (list of lists) in Java

Last Updated: 12 July 2025

Given a 2D list, the task is to iterate this 2D list in Java.2D list (list of lists)The 2D list refers to a list of lists, i.e. each row of the list is another list.[ [5,...read more

Difference between an Iterator and ListIterator in Java

Last Updated: 11 July 2025

Iterators are used in Collection framework in Java to retrieve elements one by one. It can be applied to any Collection object. By using Iterator, we can perform both read...read more

Difference Between

PriorityBlockingQueue iterator() method in Java

Last Updated: 11 July 2025

The iterator() method of PriorityBlockingQueue class Returns an iterator over the elements in this queue. The elements returned from this method do not follow any order. ...read more

Java-Collections

Java - util package

Java-PriorityBlockingQueue

Creating Sequential Stream from an Iterator in Java

Last Updated: 11 July 2025

Iterators, in Java, are used in Collection Framework to retrieve elements one by one.A stream in Java is a pipeline of objects from an array or a collection data source. A...read more

Java - util package

Java-Stream-programs

Fail Fast and Fail Safe Iterators in Java

Last Updated: 02 September 2024

In this article, I am going to explain how those collections behave which doesn't iterate as fail-fast. First of all, there is no term as fail-safe given in many places as...read more

Iterator in Java

Last Updated: 22 November 2025

An Iterator in Java is one of the most commonly used cursors in the Java Collections Framework. It is used to traverse or iterate through elements of a collection one by o...read more

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Java-Collections