Когда были впервые созданы файлы JAR? Это было в Java 1.0 или более поздней версии?
Файл JAR , Формат файла JAR и Спецификация файла JAR проливает некоторый свет на эту тему. The JAR file format was introduced in version 1.1 of the Java Development Kit, and version 1.2 includes several enhancements to JAR file functionality. Unless otherwise noted, features covered in this trail pertain to both versions 1.1 and 1.2. If a feature description or example pertains only to one version, you'll be alerted with an annotation such as "version 1.2."
The JAR file format was introduced in version 1.1 of the Java Development Kit, and version 1.2 includes several enhancements to JAR file functionality. Unless otherwise noted, features covered in this trail pertain to both versions 1.1 and 1.2. If a feature description or example pertains only to one version, you'll be alerted with an annotation such as "version 1.2."
JAR-файл (ZIP-файлы, переименованные в расширение JAR-файла) были введены в Java 1.1 http://java.sun.com/developer/Books/javaprogramming/JAR/