A runnable, interview-focused reference for the Java Collections Framework (Java 17+). Each major collection has its own Java file. Examples demonstrate commonly used methods, and comments explain the ...

Note: We expect students to adhere to the academic integrity policy in all programming assignments. We reserve the right to interview any students suspected of violating the academic integrity policy.

添え字を指定すると「元の値は後ろにずれる」 値をリストに格納する 添え字を指定したときは、「元の値は後ろにずれる ...

Use Spring MVC MultipartFile, Java Path APIs and the browser fetch API to upload files asynchronously and save them safely on the server. See how to read an array's length, define its fixed size, ...

In this tutorial, you build a Model Context Protocol (MCP) server that exposes task-management tools by using Spring Boot and the MCP Java SDK. You deploy the server to Azure Container Apps and ...

Package a Jakarta EE 11 web application and Open Liberty runtime into one runnable JAR with Maven and the Liberty Maven Plugin. Use JUnit, Cucumber, REST Assured, Selenium and JMeter to test Java ...

こんにちは！ほちまです。 Java Silver取得を目指して、毎日コツコツ勉強中です。 このnoteでは、学んだことを整理して記録しています。 同じように勉強している方の参考になったらうれしいです！ 型混在は キャスト時に例外が発生する可能性あり 型安全に ...

The Jakarta Persistence API (JPA) is a specification that defines a standardized framework for data persistence. Persistence is the fundamental mechanism for saving and retrieving data over time. In ...

The ideal Java Excel API library for Java applications has all the features you need to perform Excel operations as if you’re using the real thing. They are designed to allow developers to accomplish ...