In Java, every application begins with a class name, and that class must match the filename. Let's create our first Java file, called Main.java, which can be done in any text editor (like Notepad).

The app is for students in England, Northern Ireland, Scotland and Wales. It contains GCSE, National 4, National 5, Higher and TGAU subjects including maths, science, English, history and many more.

Revising for exams is hard but did you know there are certain foods that can help boost your brain for the moments you need it most. GP and Radio 1 expert Dr Radha has given us her top tips on the ...