To write and execute Java programs on your machine, you will need to first install the java SDK.

Instructions are provided on the class Documents page.

Next, you will need a text editor or an IDE (Integrated Development Environment) to write your .java file(s).

Do not use Microsoft Word or WordPad. Word inserts hidden formatting and may capitalize first letters of java keywords that it shouldn't.

Notepad would be ok, but there are much better choices if you are going to use a simple text editor.

Although a bit more complicated to learn, an IDE has many advantages initially and also as you become a more expert java programmer.