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Interview questions on Java HashMap, Data structure, etc are the most common and fundamental concepts. On Crunchify, we do have more than hundreds of tutorials for you to use free of charge.
Is there a way to get the value of a HashMap randomly in Java? Of Course, below is a simple Java Code which represents the same. Also, at the end of program there is a bonus code to Shuffle …
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Learn about ConcurrentHashMap vs. SynchronizedMap in Java concurrency. Code example & performance analysis. Boost your Java programming skills with Crunchify! HashMap is a very powerful data …
In Java 8 – How to sort a Map? On Crunchify we have written almost ~400 java tutorials and this one is an addition to Java8 category. I love Java collection and have multiple tutorials on How to …
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There are few concepts and technologies which comes by default with each and every programing language and Collection is one of them. Java Collection is a very big field. It comes …
Java without Java Collection is really hard to imagine. I spend almost couple of hours a day working on Java Projects for my clients. HashMap, Map, Static Objects, Java Interface are the …
In Java How to initialize HashMap? How to directly initialize a HashMap (in a literal way). There are 7 different ways you can initialize HashMap in Java. Method-1: Simple Mutable map: It's …
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Sometime back I have a special case in which I have to compare Map's Key based on equality operator (==). The equality operator (==) compares the references (addresses in memory) of the two …
Hashmap, ArrayList, Static Map, Vectors, etc are the most used Java collection framework elements. There are infinite number of scenarios you could use this as per your need. This example is very …
Here is a simple example on how to convert HashMap to ArrayList in Java. Java Example: package com.crunchify; /** * @author Crunchify.com */ import java.util.ArrayList; import …
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This tutorial gives you simple way to find unique values in ArrayList using TreeSet and HashSet. HashSet is much faster than TreeSet (constant-time versus log-time for most operations like add, remove …
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A cache is an area of local memory that holds a copy of frequently accessed data that is otherwise expensive to get or compute. Examples of such data include a result of a query to a database, a disk …
