Thread: Working on my html page and a Java class file to see if it did work

I'm working on an html blog now. So I'll start with Java. There is a FileInputStream and FileOutputStream class file. They upload information on my computer to their webs servers. There is also a buttons class. My problem is, on the html page, will the C++ or Java class files automatically transfer my files text or pictures to the web host. html. MY url is ... chrome://downloads/IMG_0610.jpg picture file in my database computer. Chrome book. Using the <a> download attribute in html5.

Assuming it was my own web host. But I'm using their web page interaction. So using html and C++ commands. I want to know this in Java to be assured it works. or was sent. ( waiting for moderation ) on the return screen and url.

I wondering if the program in Java i was working on is the same as C++ or similar programs to chrome book or the operating system chrome is on. It was on a graphics file. And it would be used on an html web page. A class file. Java programs run on Windows. But I was wondering if the Java programs like graphics and canvas run the same way as the operating systems on chrome book. I'm learning Java programs to understand how the chrome book works too. And I know that Java is similar to C++. Is this the correct way of looking at it?