This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
I usually save my java files in the c drive and have no problem compiling them via command line. Now I saved a java file in the e drive and cannot compile it because I don't know how to change drive in the command line. When I type "C:\>cd E:" it writes in the next line "E:\" then there's a blank line and then it's back to "C:\>" with the cursor blinking.