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How to write startup script for systemd? systemd is the latest service management utility in all latest version of Linux distribution such as Ubuntu OS, Redhat OS, CentOS. That's why Ubuntu 17.4 and Redhat 7.4 version now supports systemctl command as an upstart script. If you are on older version of Linux OS then you may need to look at …
Java Stream() is an amazing util class with lots of functionalities. We have published almost ~30+ Java8 Stream related tutorial on Crunchify and this one is on stream().boxed.collect() utility. We will convert Primitive Array to List in 3 …
Finding a duplicate lines from a file is not a hard problem. But sometime in an interview question, folks sometimes get very confused about the method they have to use. In this tutorial we will go over steps on how to remove duplicates from a CSV …
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We are pleased to announce our new WordPress plugin All-in-One Optimizer and Customizer. Visit plugin home page: https://pro.crunchify.com/all-in-one-optimizer-customizer/. All-in-One Optimizer & Customizer is the simplest, most powerful, …
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What is escape character in Java? Mainly escape characters are the characters which replaces existing character with new & provided character which works best without throwing any error at runtime. Also, it's required in order for …
In this Java Tutorial we will go over details on how to use HashMap's below methods: clone()putIfAbsent(K key, V value)computeIfAbsent(K key, java.util.function.Function mappingFunction)computeIfPresent(K key, java.util.function.BiFunction …
Are you a Computer Science Graduate? Are you preparing for an Interview? Want to become a master in Data Structure? Well, Sorting algorithms are the most frequently asked questions in Java interview questions. Sometime back we have written an …
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So far I've written two articles on Producer Consumer concept on Crunchify. 1st one to explain Java Semaphore and Mutex and 2nd one to explain Concurrent Read/Write. In this Java Tutorial we will go over same Producer/Consumer concept to …
What is Circle? A circle is a round shaped figure that has no corners or edges. If you have a radius for a circle, you could easily find out Area, Diameter and Circumference for a Circle. Here are the formulas for the Circle. Area: A=πr2 (π …
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