クラスに属する変数で、インスタンス化（オブジェクトを生成）せずにアクセスできる変数です。すべてのインスタンスがその同じ変数を共有します。 簡単に言うと、静的変数はクラス全体で1つだけ存在する変数です。これを使うと、複数のオブジェクト ...

Ever wonder why Java's const keyword is unimplemented? More specifically, why do we mark global constants in Java with both the static and final keywords? Why are Java constants static and final? The ...

In a previous Java 101 tutorial, you learned how to better organize your code by declaring reference types (also known as classes and interfaces) as members of other reference types and blocks. I also ...

Reflection was essential to the advanced Java toolkit for years. Now it's being superseded by newer, safer options. Here's how to use MethodHandle and VarHandle to gain programmatic access to methods ...

In this post, we will learn how to call a method in Java. This is a useful “chunk” of code that you can call from anywhere else in your program, thus preventing you from needing to write out the same ...