Java Objects

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Milan Vucic Java Objects
26 July 2022 9:56
Compare String and Equals comparisons in Java Hi! Today we will talk about a very important and interesting topic, namely, comparing objects with objects. The == operator compares object references, not object properties. Two objects could even have 500 fields with identical values, but comparing them would still yield false. After all, references car1 and car2 ...
26.07.2022
44783views
91comments
564
John Selawsky Java Objects
19 July 2018 12:04
Object lifecycle Hi! I think you wouldn't be very surprised if I told you that your computer has a limited amount of memory :) Even your hard drive (which is many, many times the size of RAM) can get chock full of your favorite games, TV shows, and other things. To prevent this from happening, you need to monitor the current state ...
19.07.2018
34715views
43comments
313
Aditi Nawghare Java Objects
10 January 2023 12:02
Wrapper Classes in Java Hi! You are already well acquainted with primitive types, and have worked quite a bit with them. In programming (and Java in particular), primitives have many advantages: they use little memory (and thus make the program more efficient) and have a clearly delineated range of values ...
10.01.2023
17062views
11comments
178
Pavlo Plynko Java Objects
21 March 2019 15:33
Sequence of actions during object creation Hi! Today's lesson will be quite... uh... multifaceted :) in the sense that we will cover a wide range of topics, but they will all relate to the object creation process. We will analyze it from beginning to end: how constructors are called, how and in what order fields (including static fields) are initialized, etc...
21.03.2019
7943views
16comments
97
Milan Vucic Java Objects
26 March 2020 15:53
Equals Method in Java: Best Practices Hi! Today we'll talk about two important methods in Java: equals() and hashCode(). This isn't the first time we've met them: the CodeGym course begins with a short lesson about equals() — read it if you've forgotten it or haven't seen it before...
26.03.2020
8078views
9comments
53
Vasyl Malik Java Objects
20 October 2020 11:49
How to swap objects in Java?Swapping objects is one of the most popular actions in programming. It’s particularly useful in sorting. What happens in swapping is two variables exchanging their values. In this article, we learn how to swap objects in Java in two different cases. One is swapping...
20.10.2020
17123views
0comments
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Oleksandr Miadelets Java Objects
30 December 2024 7:00
Java hashCode()First of all, before we define Java hashcode, we need to understand what is hashing and what is it for. Hashing is a process of applying a hash function to some data. A hash function is just a mathematical function. Don’t worry about this! “Mathematical” is not always means “complicated”...
30.12.2024
23941views
0comments
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Milan Vucic Java Objects
6 February 2025 15:45
Java toString() Method Pretty often while creating a program, it’s necessary to find out the contents of an object. For these purposes, the Java Object class, the most basic Java class in the class hierarchy, defines a special toString() method. It returns a character string that describes the object...
06.02.2025
2654views
2comments
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Milan Vucic Java Objects
16 November 2023 14:18
HashCode Method in Java: Best Practices Hi! Today we'll talk about two important methods in Java: equals() and hashCode(). This isn't the first time we've met them: the CodeGym course begins with a short lesson about equals() — read it if you've forgotten it or haven't seen it before...
16.11.2023
1300views
2comments
6
Artem Divertitto Java Objects
17 December 2024 10:58
Pairs in Java In programming, there are situations where we need to work with pairs of values, where each value has a corresponding key associated with it...
17.12.2024
2527views
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