The Interpreter design pattern is a way to implement a single language to use inside an application. In the first part of our discussion, we look at examples of the interpreter pattern and how our language will work.
The Flyweight design pattern is a structural pattern. The definition of the flyweight pattern is very simple: it uses sharing to support large numbers of fine-grained objects efficiently.
Remember Java applets? Applets are graphical programs that older Java programmers in the office used to develop Java applications that ran in browser pages.
In case you missed it, Java applets are dead. I take a short look at the life and death of Java applets.
Java finalizers are methods that are supposed to free resources after objects have been marked as unreachable. Java finalizers have been deprecated and flagged for removal, so don’t use them.
In this article I expand more on the problems with finalizers, and alternatives for your code.
Deprecated Java functionality refers to code in the language that has been flagged as no longer useful, and that should not be used. Three examples of deprecated functionality in Java are applets, finalizers and the SecurityManager class.
We look at local variable syntax for lambda parameters in this article. This is an enhancement available in JDK 11. The local variable syntax for lambda parameters allows us to use the var reserved type name when declaring the formal parameters of implicitly typed lambda expressions.
Local variable type inference in java is a way to extend the type inference mechanism to local variable declarations with initializers. This was a preview language feature in JDK 10, and is now permanent.
Text blocks were a preview language feature in JDK 13 and JDK 14. A Java text block is a multi-line string literal that doesn’t need us to use escape sequences. It makes our life much easier.
Project Lombok is a 3rd party library that defines a number of annotations and associated annotation processors. This can lead to faster coding for domain classes, with less code to maintain.
In this article we continue our examination of Java records. Remember that Java records were introduced in Java 14. Let’s look at the features and restrictions of Java records.
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