Java – How to add/remove/modify an element in List while iterating ?
In this article, we will discuss and learn with different illustrations on how to add/remove an element to List/ArrayList while iterating First, we will understand Read More
Tag: Iterator
Java 8 – How to merge/concatenate/join two lists into single list ?
In this article, we will discuss with an example for joining or concatenating or merging two or more lists into single list using Java 1.8 Read More
Java 8 – Find First and Last entries in a Map or HashMap ?
In this article, we will discuss how to get First and Last entries from a Map or HashMap using Java 8 Streams API Find First Read More
Java 8 – Find First and Last elements in a Set or HashSet ?
In this article, we will discuss how to get First and Last elements from a Set or HashSet using Java 8 Streams API Find First Read More
Java 8 – Iterating List from JDK 1.0 to Java 1.8 version in 7 ways
In this article, we will discuss how to iterate/print List (ArrayList/LinkedList) from Java 1.0 to Java 1.8 version. In one of the previous article, we Read More
Java 8 – Iterating HashMap in 8 ways
In this article, we will learn different ways to iterate through HashMap Different ways to iterate through Map : Using Map.forEach() method Using Map.keySet() and Read More
Java 8 – How to print an Arrays ?
In this article, we will see how to print elements of an Arrays Read Various ways to iterate Arrays in Java – 5 ways Different Read More
Java – How to remove elements from LinkedList
In this article, we will discuss how to remove elements from LinkedList There are different methods available in LinkedList class for removing elements as listed Read More
Java – Ways to iterate over List of HashMap
In this article, we will discuss different ways to iterate through List of HashMap. Already, in earlier articles, we have discussed following topics Iterating over Read More
Java – Different ways to iterate over HashMap of ArrayList
In one of the previous articles, we already discussed different ways to iterate through Map but those are with String object only i.e.; both keys and values are Read More
Java – Iterate through Hashtable in 6 ways
In previous articles, we have discussed various ways to iterate through Map and in this article we will learn different ways to iterate through Hashtable 1. Hashtable : Read More
Java – Sorting Hashtable contents
In this article, we will discuss how to sort Hashtable contents We can sort Hashtable in both ascending and descending order, by passing Hashtable contents Read More
Java – Sorting HashMap by Keys and Values
In this article, we will discuss how to sort HashMap by its Keys and Values 1. Sorting HashMap by its Keys : We can sort Read More
Java – Converting Unordered HashMap into Sorted TreeMap
In this article, we will discuss how to convert unordered HashMap into Sorted TreeMap We can sort HashMap in both ascending and descending order, by Read More
Java – How to iterate through LinkedHashMap in reverse-order ?
In this article, we will discuss how to iterate through contents of LinkedHashMap in reverse-order 1. Key points about LinkedHashMap: LinkedHashMap maintains insertion-order as it Read More
Java – Adding one HashMap to another HashMap using putAll method
In this article, we will add one HashMap contents to another HashMap using putAll() method of Map interface Adding one HashSet to another HashSet : Method Read More
Java – How to check whether a particular value is present in HashMap ?
In this article, we will discuss how to check whether a value is present in the invoking HashMap or Not ? 1. Searching a value Read More
Java – How to check whether a particular key is present in HashMap ?
In this article, we will discuss how to check whether a key is present in the invoking HashMap or Not 1. Searching a key from Read More
Java – How to delete all entries of HashMap ?
In this article, we will discuss how to remove all entries from invoking HashMap 1. HashMap : clear() –> to delete all entries present in HashMap Note: above Read More
Java – How to delete an entry of HashMap ?
In this article, we will discuss how to remove a particular entry from invoking HashMap 1. HashMap : remove(key) –> to delete a particular entry by specifying Read More