-deprecation is a command line option  to javac, not java.
javac is the compiler that compiles java  source into classes, java is
the virtual  machine that can run the generated classes.

btw. if you're in school or are following a computer related course,
which one and where are you attending, just curious.

Also, do people know the concept of thank you?

i dont know wht r u trying to achieve!
but one thing i would like to clarify is that..
when u r compiling a java  source code file the syntax to be used is javac
filename.java
when u r running the class file generated by compiling it, u have to use
java classname with no extension.
pls be elaborate as to wht u r trying to do.