I was creating a game with Java Applet. I wondered what would happen because there is a security problem about Java Applet.
It will finally be abolished.
I searched an alternative. I found GWT(google web toolkit). We can use Java for Ajax by GWT. GWT makes Java Script files which we can't read easily from Java file.
It sounds good.
It isn't a tool to convert Java Applet to Java Script. However, it seems that I can use it for the purpose. So, I installed it and converted Java Applet to Java Script.
At first, it was difficult for me to use it. However, I could understand how to use it soon. I remade the programs to draw game graphics and could convert Java Applet to Java Script easily. It took about !--Kai project-->two weeks for me to do it.
I have used only super dev mode which is used for debug. My game seems to work in that mode.
You may be able to use GWT(google web toolkit) to convert Java applet to alternative. You can reuse Java programs which you have made before.(I introduce how to use GWT to make a game in this page.)
You can play this roguelikegame "The adventure of a man with six powers" at this page for free without any registration and installation.