Fortunately, the Servlet 3.1 release changed all that for developers with Java file upload concerns. Java file uploads You will need to perform the following steps to create a Java Servlet file upload ...

Java 23, now generally available, includes previews of module import declarations, stream gatherers, structured concurrency, scoped values, and a class-file API. And much more.

JSP sind spezielle HTML-Dateien, die Java-Code und Ausdrücke enthalten können, die von einer Servlet-Engine verarbeitet werden, bevor sie an den Browser gesendet werden.