GeeksforGeeks

How to find the Entry with largest Key in a Java Map

Last Updated: 19 July 2022

Given a map in Java, the task is to find out the entry in this map with the highest key. Examples:Input: Map = {ABC = 10, DEF = 30, XYZ = 20}Output: XYZ = 20Input: Map = {...read more

Java

java-map

Java-Map-Programs

Minimum distance between any two equal elements in an Array

Last Updated: 20 April 2023

Given an array arr, the task is to find the minimum distance between any two same elements in the array. If no such element is found, return -1.Examples:Input: arr = {1, 2...read more

How to convert a Stream into a Map in Java

Last Updated: 21 June 2020

Introduced in Java 8, the Stream API is used to process collections of objects. A stream is a sequence of objects that supports various methods which can be pipelined to p...read more

Java-Stream-Collectors

Java 8

Java-Collectors

Map Values() Method in Java With Examples

Last Updated: 10 September 2020

Map Values() method returns the Collection view of the values contained in this map. The collection is backed by the map, so changes to the map are reflected in the collec...read more

Map size() Method in Java With Examples

Last Updated: 02 June 2023

Map size() method in Java is used to get the total number entries i.e, key-value pair. So this method is useful when you want total entries present on the map. If the map ...read more

Difference between List, Set and Map in Java

Last Updated: 27 September 2021

List interface in Java is a sub-interface of the Java collections interface. It contains the index-based methods to insert, update, delete, and search the elements. It can...read more

Java Program to Copy the Map Content to Another Hashtable

Last Updated: 28 December 2020

HashMap and Hashtable are used to store data in key and value form using a hashing technique to store unique keys. To copy Map content to another Hashtable in Java putAll(...read more

How to Copy Map Content to Another Hashtable in Java?

Last Updated: 07 January 2021

The Hashtable class implements a hash table, which maps keys to values. Any non-null object can be used as a key or as a value. To successfully store and retrieve objects ...read more

Technical Scripter 2020

Java-Collections

java-map

Java-HashTable

Difference Between Hashtable and Synchronized Map in Java

Last Updated: 22 February 2021

The Hashtable class implements a hash table, which maps keys to values. Any non-null object can be used as a key or as a value. To successfully store and retrieve objects ...read more

Technical Scripter 2020

Java-Collections

java-map

Java-HashTable

Difference Between keySet() vs value() Method in Java Map

Last Updated: 07 March 2022

Map Interface is present in Java.util package, which provides mainly three methods KeySet(),entrySet() and values(). These methods are used to retrieve the keys of the map...read more

Technical Scripter 2020

Java-Collections

java-map

Difference Between value() vs entrySet() Method in Java Map

Last Updated: 27 January 2022

Map Interface is present in Java.util package, which provides mainly three methods KeySet(),entrySet() and values(). These methods are used to retrieve the keys of the map...read more

Technical Scripter 2020

Java-Collections

java-map

Difference Between keySet() and entrySet() Method in Java Map

Last Updated: 02 June 2022

Map Interface is present in Java.util package, which provides mainly three methods KeySet(),entrySet() and values(). These methods are used to retrieve the keys of the map...read more

Technical Scripter 2020

Java-Collections

java-map

How to Convert Map to JSON to HashMap in Java?

Last Updated: 04 August 2022

JSON is an open standard file format, and easier data interchange format helpful for humans to transmit data. Most of the apps display JSON data and hence nowadays JSON ha...read more

Last Updated: 05 February 2024

In C++, Sets are containers that allow the users to store unique elements in sorted order while maps containers store key-value pairs in sorted order based on the keys. In...read more

Java Collection Exercise

Last Updated: 12 March 2024

The Java Collection framework is a fundamental part of the Java programming language, It covers a major part of Java and acts as a prerequisite for many Advanced Java Topi...read more

Java-Collection-Programs