From assertions in JDK 1.4 to the forthcoming lambdas in Java 8, the Java language has evolved considerably since its inception. The next several Java 101 articles present a toolbox of essential Java ...

この記事の要約：Javaはオブジェクト指向プログラミング言語であり、プログラムのほとんどの要素がオブジェクトとして扱われます。Day 4では、これらのオブジェクトを効果的に作成、操作、理解するための基本的な概念とテクニックに焦点を当ててい ...

Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...