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Articles by Way2Class
170 articles
Java program to sort a HashMap by Keys and Values
In this article, we will learn the procedures for sorting a HashMap in Java by its keys and values, as well as examine the performance implications associated with each technique. HashMap, a frequently employed data structure, enables programmers to store key-value pairs. This data structure is an exceedingly efficient method for storing data and allows for swift value retrieval based on keys. However, on occasion, it may become necessary to arrange the HashMap by its keys or values. Different Approaches of Sorting the HashMap Following are the different approaches to sorting a HashMap by Keys and Values − ...
Read MoreJava Tricky Output Questions
Java Tricky Output Questions that are difficult to answer call for more work to be put into them. We will fall short if we attempt to respond to a challenging topic using common sense since such questions need specialized understanding. The majority of challenging java problems are based on perplexing ideas like loops, multi-threading, overloading, overriding, etc. Even when a question isn’t particularly challenging, we occasionally have trouble solving it. Despite the fact that the answer to the question is straightforward, we occasionally write code carelessly. Even if we don’t know the solution, we can still use analytical thinking ...
Read MoreProducer-Consumer Problem in C
In concurrent programming, concurrency represents a pivotal concept necessary to comprehend fully how such systems operate. Among the various challenges encountered by practitioners working with these systems stands out the producer-consumer problem - one of the most renowned synchronization issues. In this text, our objective consists of analyzing this topic and highlighting its significance for concurrent computing while also examining possible solutions rooted within C. Introduction In concurrent systems, multiple threads or processes may access shared resources simultaneously. The producer-consumer problem involves two entities: producers that generate data or tasks, and consumers that process or consume the generated data. The ...
Read MorePrint Binary Equivalent of an Integer using Recursion in Java
Recursion, a potent programming technique, entails the resolution of a problem by decomposing it into smaller, more manageable sub problems and applying the same algorithm to solve them. In the realm of Java programming, recursion proves to be an invaluable tool when it comes to printing the binary representation of an integer. The binary equivalent, expressed in a base-2 numeral system that employs only two digits, 0 and 1, poses a common challenge in the field. In this article, we shall embark to unravel the intricacies of printing the binary equivalent of an integer using recursion in Java. Our ...
Read MoreZoom Scroll View in Android
Many Android applications have the zoomable scrolling feature, which enables users to pinch or stretch their fingers on the screen to zoom in and out of material like photographs or maps. Using a Zoom Scroll View, a custom view that expands the Android ScrollView and offers built-in support for zooming and scrolling, is one popular method for implementing zoomable scrolling in Android. We shall examine how to implement Zoom Scroll View on Android in this technical writing. In this tutorial, we'll go through the fundamental ideas and procedures needed to develop zoomable scrolling in your Android application using a Zoom ...
Read MoreWhy does an online Judge crash during an online Programming Contest?
We all are well aware are that now-a-days various coding platforms include competitive codings, for example GeeksforGeeks, CodeChef, Codeforces, atCoder, SPOJ, HackerRank, HackerEarth, and many more where they supposed to code out by themselves by either attaching local editor file such as a sublime editor or by directly writing on their respective editors. So how are these test cases getting accessed or in an easy way we can say that our code is getting compiled and run? On these programming platforms for competitive programming online judges act as the backbone for code compilation and run. Online Judge To judge ...
Read MoreLocking Screen Orientation in Android
When talking about operating systems powering contemporary must have gadgets like smartphones, tablets and smartwatches Android tops the list without question. Its robust architecture offers almost limitless customizability options combined with an array of features built around elevating users' experiences to a different level entirely. One remarkable addition to Androids capabilities is the screen orientation locking function which allows you to fix the display in either portrait or landscape mode irrespective of how you hold your device. In this write up we highlight why screening locking is critical to optimal use of modern day Android devices and provide intuitive ...
Read MoreLeft Shift Operator in Java
The execution of instructions in programming languages involves the operation of various symbols referred to as "operators." Operators tell computers what action/value evaluation should be performed throughout set codes. Arithmetic-based operates consist of performing essential calculations like addition/subtraction/multiplication/division. Played out with relational-oriented operates that indicate interactions between any two values and analyzes when one is greater/equal/less with regards to another value - showing its relevance under certain conditions. Logical-operates' primary role often includes merging diverse quality statements into significant arguments either as True/False statement criteria based on developers' intentions efficiently using all three indispensable operator types. Left Shift Operator in ...
Read MoreWhich Data Type cannot be stored in Java ArrayList?
An ArrayList is a dynamic list of objects and you can't store primitive values like int, double, char or long in an ArrayList. The creation of wrapped class in java allows for holding of primitive data types and each object belonging to these types holds a single value for its respective primitive data type (int, double short or byte).To work with primitive data types in Java structures like JLists or ArrayLists which require objects, we need to use wrappers, and this article explains how to use ArrayList to store simple data types such as int and char. Primitive Data types ...
Read MoreAsynchronous and synchronous callbacks in Java
Sun Microsystems initially introduced Java, a programming language and computing platform, in 1995. It has grown from its modest origins to power a significant portion of the digital world of today by offering the solid foundation upon which numerous services and applications are developed. Java is still used in cutting-edge goods and digital services that are being developed for the future. What is Asynchronous and Synchronous in Java? Java's asynchronous programming paradigm enables teams to distribute workload and develop application features apart from the main application thread. The code is then synchronised with the main thread when the team is ...
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