Чашечка Java

How to Calculate Compound Interest in Java? Example Tutorial Calculating simple interest or compound interest are common coding problem which are taught in schools and colleges to teach you coding. The best thing about these coding exercise in Java are that everybody are familiar with them so you know the concept already and all you need to do is convert that solution into code which is the skill needed to become a coder or programmer. If you remember your primary Maths classes then you would know that formula to calculate compound interest depends upon three things principle, rate, number of times interest is compounded per year, and time. This means you need to write a function which will accept these three data as parameters or method arguments. Java Interview questions and tutorials Read: http://www.java67.com/2022/07/compound-interest-in-java-example.html

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Top 5 Object Oriented Analysis and Design Interview Questions for Programmers, Software Engineers Testing the design skill of a candidate is quite common in programming job interviews. Questions like, how do you design a vending machine or a traffic control system are very popular in object-oriented programming language interviews, like Java and C++. Designing a software System requires good experience and knowledge of tools of object-oriented design and analysis. You should not only be good at OOP fundamentals like Abstraction, Inheritance, Polymorphism, Encapsulation, Coupling, Cohesion, Association, Aggregation, or Composition but also on several crucial object-oriented design principles like SOLID Principles of Object-Oriented Design, which is the building block for writing flexible and maintainable code. Java Interview questions and tutorials Read: http://www.java67.com/2016/07/top-5-object-oriented-design-interview-questions.html

Java News Roundup: JDK 19 in RDP2, Oracle Critical Patch Update, TornadoVM on M1, Grails CVE This week's Java roundup for July 18th, 2022, features news from Oracle, JDK 18, JDK 19, JDK 20, Spring Boot and Spring Security milestone and point releases, Spring for GraphQL 1.0.1, Liberica JDK updates, Quarkus 2.10.3, CVE in Grails, JobRunr 5.1.6, JReleaser maintenance, Apache Tomcat 9.0.65 and 10.1.0-M17, Tornado VM on Apple M1 and the JBNC conference. By Michael Redlich Read: https://www.infoq.com/news/2022/07/java-news-roundup-jul18-2022/

How to create a thread-safe Singleton in Java using Enum [Example] Hello guys, the Singleton pattern in Java is used to create a Singleton class that is accessed by a single instance though out the Java program life cycle. Singleton is one of the old but very useful design patterns and used in several core Java libraries including Java Development Kit (JDK); java.lang.Runtime is an example of a Singleton pattern in Java. This class represents a single instance of Java environment running as JVM and provides several utility methods to query important details about runtime like a number of available processors, Java heap memory, etc. Java Interview questions and tutorials Read: http://www.java67.com/2021/05/singleton-in-java-using-enum-example.html

Top 50 Microsoft Software Development Engineer Interview Questions Hello guys, if you are preparing for Microsoft Software Development Engineer interview or in general preparing for FAANG coding interviews and looking for common interview questions for practice then you have come to the right place. Earlier, I have shared best Coding interview courses and books and in this article, I am going to share you some of the frequently asked questions from Microsoft. Most of the things depending upon for which position you are going like technical analyst, software engineer, Java developer, web developer or internship. If you have a computer science degree and if your job involves coding then you can expect following questions, which are mainly collected from engineers who has appeared on on and off campus interviews. Java Interview questions and tutorials Read: http://www.java67.com/2022/07/top-50-microsoft-software-development.html

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Компиляторы против компиляторов Давно хотел познакомиться с Rust. Язык с экосистемой сборки из коробки, компилятор в машинный код, но самое главное — автоматическое управление памятью, но без сборщика мусора. С учетом того, что управление памятью обещается как zero-cost в runtime — просто сказка! По по ходу изучения и возник вопрос – а насколько код Rust быстрее/медленнее компилятора в машинный код давно известного, например, Delphi? Посмотреть на финалистов Читать: https://habr.com/ru/post/678628/?utm_campaign=678628

Top Java Blogs Weekly: Best of 31/2022 Best of Top Java Blogs, year 2022, week 31 Read: https://www.topjavablogs.com/news/best-of-31-2022

​Java — один из самых популярных языков программирования. Он универсален и выступает основой всех типов сетевых приложений. Специалисты, работающие с этим языком, востребованы на рынке. Если хотите к ним присоединиться, участвуйте в бесплатном тематическом онлайн-интенсиве. Узнайте подробности: https://clc.to/OwjbOA Сразу после регистрации отправим вам на почту чек-лист по знаниям и навыкам, которые необходимы backend-разработчику для трудоустройства. Никакой скучной теории — только самый интересный материал и мощная практика. За 3 дня вы примерите на себя профессию Java-разработчика и поймёте, в каком направлении двигаться дальше. Спикером выступит директор центра подбора IT-специалистов SymbioWay Даниил Пилипенко. Всех ждут подарки. Участвуйте, задавайте вопросы и получите сертификат на 10 000 рублей на любой курс Skillbox! Присоединяйтесь к онлайн-интенсиву с 28 по 30 июля в 19:00 по московскому времени. Это #партнёрский пост

10 Examples Of du Command in Linux Here, we shall be looking at another command in Linux. The” du” command. Before giving the examples you can use with it I will be explaining the du itself, What is being used for and When to use it, and How to use it So Firstly, What is DU or What does the command mean?<o:p The full meaning of du is Disk usage. This helps in planning and maintaining the file’s space. The command is used to keep track of any files or directories that are taking up too many spaces in the hard disk drive. Now we shall be taking the examples one after the other. Java Interview questions and tutorials Read: http://www.java67.com/2022/07/10-examples-of-du-command-in-linux.html

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Коллекции в Kotlin: знакомство и основные функции Зачем нужны коллекции в Kotlin — List, Set и Map — и как они работают. Как создать редактируемые классы MutableList, MutableSet и MutableMap. Читать: «Коллекции в Kotlin: знакомство и основные функции»

3 Examples of for loop in Linux and Bash Script [Tutorial] Hello guys, if you want to learn how to use for loop in bash or Linux then you have come to the right place. Earlier, I have shared free Linux coursesand free bash scripting courses, and today, I am going to share three simple examples of using for loop in Linux.  If you are a Programmer, Software Engineer, or System Administrator working in a UNIX or Linux environment, then you will probably find the shell 'for' loop to be a handy tool for automating simple command-line tasks. This is the single command which has helped me a lot while doing production support and performing operational tasks. Java Interview questions and tutorials Read: http://www.java67.com/2021/04/for-loop-example-bash-linux-tutorial.html

10 ways to Quit/Exit from Vim Editor in Linux/UNIX? Examples Hello guys, if you are stuck inside VIM editor and looking for a way to come out then you have come to the right place. In the past, I have shared the free Linux coursesand today, I am going to talk about Vim or VI editor, one of the most important tools for people working in Linux. You might not know but many developers struggle to get out of commands like Vim and telnet. I can say that because there was a time when I spend a good amount of time coming out from the telnet window. Java Interview questions and tutorials Read: http://www.java67.com/2020/03/9-ways-to-close-or-exit-vim-editor-in-Linux.html

10 Example of ps -ef command in Linux and UNIX Hello guys, It's been a long time since I wrote about the Linux command in this blog. In my last article, I have shared free Linux courses for beginnerswhich many of you guys have liked, that's why I am writing another post on Linux, this time about the "ps" command.  If you have worked on a Linux machine then you are likely to be familiar with the "ps" command. The "ps" command is used to check the process status. It stands for "process statistics" and you can use the ps command to see all the processes and find things like PID which can be used to interact with the process. For example, you can kill a process by passing PID to kill command in Linux as shown here. Java Interview questions and tutorials Read: http://www.java67.com/2020/03/10-ways-to-use-ps-command-in-linux.html

in human-readable format(I.e, Mb, Gb, etc), To Display the Space Storage of a particular file, To Display the type of a file system, To Print grand total space of all file usage, To Display I-nodes of the information file system, To Print the information of a file’s system space usage, To Display information of  file’s system information in byte, To Display information of  file’s system information in byte Megabyte (MB)<o:p Java Interview questions and tutorials Read: http://www.java67.com/2022/07/10-examples-of-df-command-in-linux.html

10 Examples of df Command in Linux Hello, In Today’s article we shall be talking about the df command in Linux. The objectives of this article are: What is the df command, and what does it mean? How is it used? I shall be providing 10 different examples or scenarios for it and when to use it What does df mean?<o:p The meaning of df in Linux is disk-free or disk file system. Which is used to display the file system in the likes of total storage space, available storage space and etc.<o:p Df command in Linux is a command or syntax in Linux that you doing away with it is almost impossible<o:p You may begin to wonder or ask Why or When do You need to use it?<o:p WHY AND WHERE TO USE IT<o:p As the name implies, disk-free or disk file system. You use it when you need to query some information if the file system. There is a general command of df and there are options, I mean many options you could use with it depending on what you are trying to do.<o:p 1. To Display all the file system<o:p “df -a”<o:p The command above displays information about all the files you have in there. The option -a enables us to do that.<o:p 2. To seek For help<o:p “df --help”<o:p This helps us to find help when necessary. Still the same command df with another option of -help <o:p 3. To Display file size in human-readable format(I.e, Mb, Gb, etc)<o:p “df -h”<o:p This displays the files in a more readable format, whether Mb, Kb, or Gb. Mb as in Megabyte, Kb as in Kilobyte, Gb as in Gigabyte.<o:p 4. To Display Space Storage of a particular file. <o:p “df -h /cren/”<o:p This command outputs the space storage of a particular file you have specified. In our case the file that we want to check the space storage is cren. Now note that there was the option -h  before it. This means that the output will be in a human-readable format.<o:p 5. To Display the type of file system. <o:p “df -T”<o:p There could be times whereby you need to know what type of files you have in your system. The -T options make that possible by printing the type of the file(s), you could see "Type" column that contains different types of file. 6. To Print the grand total space of all file usage<o:p “df -h --total”<o:p This option is used to display the grand total of disk usage of all the file system<o:p 7. To Display I-nodes of the information file system<o:p “df -i”<o:p By using the command above the information about the file system is going to be displayed. You are able to do that with the option -I.<o:p 8. To print the information on a file’s system space usage<o:p There are two things to this. It is either you are printing information from a local file or the remote one. The is a general command for that, which is: “df -Thl”.<o:p But, if you are limiting that to the local file(s) then you are going to add the option “l” to it hence why we have:<o:p “df -Thl”<o:p 9. To Display information of  file’s system information in byte<o:p “df -k”<o:p This command makes the file information be displayed in bytes. The option -k makes this possible. This displays the information in more than one thousand byte blocks.<o:p 10. To Display information of  file’s system information in byte Megabyte (MB)<o:p “df -m”<o:p The output of this command is similar to what we have at number 9. The difference is just that one is in kilobytes while the other is in megabytes. CONCLUSION: In This article, you learned what df is and what it can be used for, Why and where it is used. There are many things you could use df with to achieve a particular thing and it is not limited to the 10 examples provided here. It was explained that you can use df to Display all the file systems, To seek For help, To Display file size[...]