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CodeGym
Java Developer
27 July 2018 7:24
Old Level 11
Old Level 11
CodeGym
Java Developer
27 July 2018 7:24
Old Level 10
Old Level 10
CodeGym
Java Developer
25 July 2018 7:23
Old Level 09
Old Level 09
CodeGym
Java Developer
25 July 2018 7:22
Old Level 08
Old Level 08
CodeGym
Java Developer
23 July 2018 7:22
Old Level 07
Old Level 07
CodeGym
Java Developer
22 July 2018 7:21
Old Level 06
Old Level 06
CodeGym
Java Developer
21 July 2018 7:21
Old Level 05
Old Level 05
Aditi Nawghare
Keywords in Java
20 July 2018 15:00
Fixed values in Java: final, constants, and immutable
Hi! You're already familiar with the word "modifier". At a minimum, you've encountered access modifiers (public, private) and the static modifier. Today we'll discuss a special modifier called final. You could say the final modifier "cements" parts of our program where constant, unambiguous, unchanging behaviors ...
Volodymyr Portianko
Java Exceptions
20 July 2018 13:49
Exceptions: checked, unchecked, and custom
Hi! In the last lesson, we got acquainted with exceptions in the Java language, and saw examples of how to work with them. Today we will take a deeper look at the structure of exceptions, and learn how to write our own exceptions. :) As we said previously, there are a lot of exceptions in Java, almost 400 ...
Oleksandr Miadelets
Methods in Java
20 July 2018 12:27
Method declaration
Hi! You've already known about creating your own classes with fields and methods. Now we'll dwell on methods. Of course, we've already done this more than once in our lessons, but we've mainly covered generalities. Today, we're going to dissect methods, and study what they're made of ...
Milan Vucic
Core Java
20 July 2018 11:58
How not to get lost in time: DateTime and Calendar
Hi! Today we'll start working with a new data type we haven't encountered before, namely, dates. I don't think I need to explain what a date is. :) In principle, we could store the current date and time in an ordinary Java String. But this approach has many drawbacks. The String class is designed to work with text ...
Jesse Haniel
Java Collections
20 July 2018 9:40
Collections class in Java
Hi! In the past few lessons, we've made great progress in our mastery of ArrayList. However, so far we've only performed the simplest operations: remove, insert, and display. Of course, this doesn't cover the full list of tasks that developers must perform when working with ArrayList ...
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