Where is the command line in the directory?

I am relearning Java programming and doing an online tutorial.
I went ahead and dowloaded the JDK program (jdk-6u3-windows-i586-p-iftw.exe) from Java's website and put it in a folder on my computer. I also have a BigDebt.java program on my computer....but the tutorial is telling me to put this command "javac BigDebt.java" in the directory where my program is saved to compile the program. Do I type in "javac BigDebt.java" in the Address line in the folder or where do I type this? Thanks.

PZPZ wrote:
If JAVA is an open-source programming language, when someone creates an application with it, how does one protect their code (their software business) from other people viewing and copying it? Worry about that when your code is good enough that someone would want to steal it and it would damage you if they did so. The short version is by obfuscation, which it not a very strong measure, or through license agreements, or by running the sensitive code on a server, so the client never sees it.
And what are some really cool games that have been made with only JAVA or do people use JAVA with other programming languages to create games and applications?Don't know. Not into games.
Also, it's Java, not JAVA. It's not an acronym.

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Hello Massimiliano,
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Hi @Bask-48
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N/A
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DirectoryString
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at oracle.apps.fnd.common.AppsContext.makeProfileStore(AppsContext.java:
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