なぜ子どもは「Scratch」を何年続けてもJavaやPythonが書けないのか？──元JVM開発者が教える、小中学生が挫折しない「コード習得の ...

「小学生から大手のプログラミング教室に3年間通い、Scratchで自由自在にゲームを作れるようになりました。でも、いざ本格的なテキスト言語（PythonやJava）に進もうとした途端、まったく書けなくなって挫折してしまいました……」 ...
GitHub

Smart NGO Donation Tracker

Smart NGO Donation Tracker is a Java-based donation management system developed for NayePankh Foundation. The project helps NGOs efficiently manage donor information and donation records. The system ...
TheServerSide

Find duplicates in a List in Java

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 ...
InfoWorld

High-performance programming with Java streams

Learn how to use advanced techniques like short-circuiting, parallel execution, virtual threads, and stream gatherers to maximize Java stream performance. My recent Java Stream API tutorial introduced ...
TheServerSide

Remove duplicates from a Java List

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 ...
GitHub

CSE 12 PA2: Generics & ArrayLists

In this part of the assignment, you will implement a data structure similar to Java's ArrayList and write JUnit tests to ensure that your implementation functions correctly. Make sure to read the ...
note

Java : Integer型とint型の違い

intはプリミティブな整数型で、数値の演算や効率的な処理に適しています。 Integerはintをオブジェクトとして扱えるラッパークラスで、nullやコレクションに使う場合に便利です。 1. int型とは ...
InfoWorld

How to use generics in your Java programs

Generics make your code more flexible and easier to read, and they help you avoid ClassCastExceptions at runtime. Get started with this introduction to using generics with the Java Collections ...