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Эллеонора Керри
Random EN
28 February 2021 0:00
Coffee break #161. How to handle Null in Java using Optional
Source: When I first started working with Java code, I was often advised to use Optional. But at the time I had little understanding of why using Optional was better than implementing handling for null values. In this article, I want to sha
Эллеонора Керри
Random EN
28 February 2021 0:00
Coffee break #162. Implementation of a stack using a queue. Java Math class methods
Source: We have :
Эллеонора Керри
Random EN
28 February 2021 0:00
Coffee break #163. What is the difference between a lambda and a method reference. 5 Ways to Concatenate String Null in Java
Source: It turns out there is a subtle difference between lambda expressions and method references. For example, compare: and . In general, both options are equivalent to each other. But if myInstance is null, and the lambda produces a null
Эллеонора Керри
Random EN
28 February 2021 0:00
Video Weekend #141. We study logging of Java applications, listen to the success story of a junior and analyze the principle of operation of the switch statement in Java
How to add logging to a Java application? This question is answered in the video. After viewing it, you will learn what logging is and why it is needed, how to output logs to the console, write to a file, how to log specific packages/classe
Эллеонора Керри
Random EN
28 February 2021 0:00
Coffee break #164. Three ways to convert an array to a list. How to Write a Palindrome Checker in Java
Source: You can use three methods to convert an array to a list: This method is the simplest of the three, and most developers consider it very trivial and obvious. To use it, you need to follow three simple steps: Let's see how these three
Алексей Тимошенко
Random EN
28 February 2021 0:00
How to create your own template (Live Template) in IntelliJ IDEA?
I came across this instruction in a telegram chat. Very happy with my new template! I understand that you need to type such lines of code yourself in order to know them by heart, but it’s very convenient to just type only two letters and pr
Эллеонора Керри
Random EN
28 February 2021 0:00
Coffee break #165. Packages in Java. Thread-safe methods for beginners
Source: is a way to group together a group of classes, interfaces, and subpackages. Packages are used to create groups of related classes, interfaces, enumerations, and so on. are packages that are within another package. They are not impor
Эллеонора Керри
Random EN
28 February 2021 0:00
Coffee break #166. Why is encapsulation needed in Java? Three Ways to Use the Print Function in Java
Source: Encapsulation is a concept in the Java language that combines data and the methods that operate on it into a single package or wrapper. Simply put, encapsulation combines variables and methods in one class. Let's understand this con
Эллеонора Керри
Random EN
28 February 2021 0:00
Coffee break #167. Things to review before a Java interview. What is the difference between enum and iterator in Java?
Source: I've worked in the IT industry for over 20 years and spent most of that time working with Java. In addition, I gained considerable experience interviewing Java developers. Although the Java language is constantly evolving, the core
Эллеонора Керри
Random EN
28 February 2021 0:00
Coffee break #168. Why override equals and hashcode methods in Java?
Source: In Java, we cannot overload the behavior of operators like , , . They work according to a given process. For example, consider the operation of the operator . It checks whether the two references being compared point to the same ins
Эллеонора Керри
Random EN
28 February 2021 0:00
Coffee break #169. Comparison of types. Java.io - I/O Operations in Java
Source: The most common way to determine whether a given object is of a given class, superclass, or interface is to use the binary operator . It includes an implicit null check and generates a compile-time error if the types are not bound.
Эллеонора Керри
Random EN
28 February 2021 0:00
Eternal Sunshine of a Blank Screen: What to Watch on New Year's Eve
Do you stay in the city for all the holidays, but your friends go somewhere else? Is winter weather not conducive to active outdoor recreation? Or do you just like to lie down on the sofa under the Christmas tree and watch something? Then w
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