Illegal Character when trying to compile java code

Question

I have a program that allows a user to type java code into a rich text box and then compile it using the java compiler. Whenever I try to compile the code that I have writte

Answer 1

1. If using an IDE, specify the java file encoding (via the properties panel)
2. If NOT using an IDE, use an advanced text-editor (I can recommend Notepad++) and set the encoding to "UTF without BOM", or "ANSI", if that suits you.