This is a free virtual keyboard to write the Japanese language.
It lets you write, copy and paste text, as well as save and open text files.
What are the keyboard strokes?
On some keyboards, there is a "Keyboard strokes" button in the button bar, between the "Save" button and the "Zoom in" button.
When you turn it on, it creates keyboard shortcuts for some letters. Pass the mouse on the virtual keys to discover the associated
keyboard strokes.
What about other languages?
You can find here the complete list of supported languages.
Java is not installed on my system, what can I do?
You can try the light version of the keyboard which relies on your system and browser capabilities to deal with Japanese.
In particular, it may not display properly all the Japanese signs and words.
If it doesn't work properly, you can install java from Java's official website. to use a keyboard that does fully support Japanese.