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Home » Java

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    International Nurses Day in Hindi | नर्स दिवस क्यों मनाते हैं? General Knowledge
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Category: Java

Internal Working of HashMap in Java, Rehashing, Collision

Posted on June 18, 2022June 18, 2022 By GeekCer Education No Comments on Internal Working of HashMap in Java, Rehashing, Collision
Internal Working of HashMap in Java, Rehashing, Collision

Learn about HashMap internal working, Hashing, Re-Hashing, Node usage in HashMap, and Node structure in Java. HashMap node structure To define the map’s entries, HashMap uses the Node<K,V> class, which is a static inner class. It is not incorrect to state that each element in the HashMap is a node. static class Node<K,V> implements Map.Entry<K,V>…

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Java

Sequential and Parallel Stream in Java | Example, Differences

Posted on June 11, 2022June 11, 2022 By GeekCer Education No Comments on Sequential and Parallel Stream in Java | Example, Differences
Sequential and Parallel Stream in Java | Example, Differences

Let’s look at the differences between Sequential and parallel stream in Java 8, as well as when to use parallel streams in Java 8. Sequential stream is based on a single core and works similar as for loop. Parallel stream makes use of the computer’s numerous cores and divides the job into multiple subtasks, each…

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Differences, Java

Java 8 Stream map example | Java 8 map(function) parameter

Posted on June 1, 2022June 1, 2022 By GeekCer Education No Comments on Java 8 Stream map example | Java 8 map(function) parameter
Java 8 Stream map example | Java 8 map(function) parameter

The Stream.map() function in Java 8 converts a stream to another form. The java Stream.map() acts as a bridge between two operations. In other words, it is an intermediate operation. The map() accepts an input stream and returns a result to a stream which is sent the output stream. If we have a type X…

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Java

Fork/Join Framework in Java | RecursiveTask, RecursiveAction

Posted on May 11, 2022May 21, 2022 By GeekCer Education No Comments on Fork/Join Framework in Java | RecursiveTask, RecursiveAction
Fork/Join Framework in Java | RecursiveTask, RecursiveAction

Fork/Join allows us to divide the task into smaller pieces and combine the results. It uses Work-stealing algorithm. If more than one thread is working at the same time, and one thread completes its job while the other thread remains busy, the completed thread steals the tasks from the busy thread and begins working on…

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Java

Java 11 new Features (With example Programs)

Posted on March 27, 2022May 4, 2022 By GeekCer Education No Comments on Java 11 new Features (With example Programs)
Java 11 new Features (With example Programs)

Several new features have been added to Java 11 to assist developers in avoiding boilerplate code and improving readability. Java 11 is the first Long Term Support (LTS) version following Java 8. Oracle discontinued supporting Java 8 in January 2019. Oracle, as we all know, releases a new Java version every six months. Java is…

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Important, Interview, Java

Difference between Runnable and Callable in Java

Posted on March 22, 2022May 4, 2022 By GeekCer Education No Comments on Difference between Runnable and Callable in Java
Difference between Runnable and Callable in Java

Runnable and Callable are both useful for implementing multithreading. Runnable has been enhanced into Callable in Java 1.5. It’s important to understand that Tasks that will be executed by other threads are encapsulated using the Callable and Runnable interfaces. The java.util.concurrent package has a Callable. Runnable is available in java.lang.Thread. There are, however, some differences…

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Differences, Important, Java

Jenkins java | Installing Jenkins on Windows

Posted on March 4, 2022March 4, 2022 By GeekCer Education No Comments on Jenkins java | Installing Jenkins on Windows
Jenkins java | Installing Jenkins on Windows

Jenkins is a DevOps tool that is developed in Java and Jenkins is a free and open-source tool for continuous integration and deployment. Jenkins invites the developer to set up a continuous integration/continuous deployment (CI/CD) environment. It has version control technologies like Git, Maven, and others that may be used to control the version. In…

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Important, Java

Java 8 interview questions and answers, Java Stream, Optional

Posted on February 18, 2022June 1, 2022 By GeekCer Education No Comments on Java 8 interview questions and answers, Java Stream, Optional
Java 8 interview questions and answers, Java Stream, Optional

Hi Readers, In this article we have compiled some important and frequently asked questions from Java 8. Java 8 interview questions and answers are available for beginners, those with 5 years of experience, those with 10 years of experience, and those with 12 years of experience. What are some of the new features in JAVA…

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Important, Interview, Java

Concurrent collections in Java, details, advantages, examples

Posted on December 18, 2021October 27, 2022 By GeekCer Education No Comments on Concurrent collections in Java, details, advantages, examples
Concurrent collections in Java, details, advantages, examples

Concurrent collections in Java are designed with the goal of allowing many threads to access the same data in a synchronized manner. In other words, Concurrent collections in Java allow many threads to access the same data synchronously. If you’re familiar with Java Collections, you’re probably aware that most Collection classes aren’t thread-safe by default….

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Java

Lambda Expression in Java 8 | Functional Interface | Example

Posted on December 8, 2021June 17, 2022 By GeekCer Education No Comments on Lambda Expression in Java 8 | Functional Interface | Example
Lambda Expression in Java 8 | Functional Interface | Example

Lambda expressions aided the developer in simplifying the development process. The lambda expression is important feature of Java 8. This functionality is highly useful in collections for iterating and filtering the data. It does not have a return type or even a method name, and it does not specify accessibility. Classes and objects are given…

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Java

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