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 ...

Along with lambdas, Java SE 8 brought method references to the Java language. This tutorial offers a brief overview of method references in Java, then gets you started using them with Java code ...

In this tip, I'd like to show a simple technique that allows switching between multiple versions of the code at runtime. Often, when I'm testing a new solution, I'd like to run an old version and make ...