``Essential Commands in Window:

cd: Changes the current directory.
dir: Lists files and directories in the current directory.
copy: Copies files from one location to another.
move: Moves files or directories.
del: Deletes files.
mkdir (md): Creates a new directory.
rmdir (rd): Removes a directory.
cls: Clears the screen.

``Java and the Command Window
Compiling Java code:
You use the command window to run the javac compiler on your Java source code files (.java) to create bytecode files (.class).
Example: javac MyProgram.java

Running Java programs:
Once compiled, you use the java command to execute the bytecode.
Example: java MyProgram