As Java developers, we've all encountered the infamous NullPointerException (NPE). It's like an uninvited guest at a party, showing up when least expected and causing all sorts of trouble. But fear ...

Java標準のOptionalクラスにいくつか不満点があったので、新しいOptionalクラスを考えてみました。 前回の記事でJavaのOptionalクラスについて考察しました。その中でいくつか不満点も挙げました。 具体的な不満点は前回の記事を読んでいただくとして、Java標準 ...

Optional is a new class added in java 8 in java.util package. This story will offer an in-depth explanation about java Optional class and its objects. In a single line, Optional is designed to deal ...

From this article you will learn how to handle optional parameters in Java. We’ll focus on regular method, class constructors with optional fields, and quickly look at bad practices of the discussed ...

The preferred alternative to this method is orElseThrow(). This rule should only apply to Java 10 and later. On Java 8 and 9, Optional.get() should be considered ...