HashMap は 「名前とデータをセットにして保存できる箱」 みたいなものだよ。 たとえば、「国」と「首都」をセットで保存する」 ことができる。

This project contains Java code examples demonstrating how to use HashMaps in Java. The project showcases how to manipulate HashMaps, including adding, retrieving, removing elements, and counting the ...

A data structure is a specialized format for organizing, processing, retrieving and storing data. There are several basic and advanced types of data structures, all designed to arrange data to suit a ...

A frequently asked question in a Java interview is: How to implement a Java HashMap? Java job seekers must fully grok this important concept if they want to ace the interview. The HashMap tutorial ...