Stuck with compiling a source file

Hi,
I'm stuck with this strange problem and i desperately need some help.
My source file is in the D drive inside the package named objectwrite. The source file X.java is extending an abstract class named Y. When i'm trying to compile the files using the command javac objectwrite\ x.java y.java from D drive, it's giving the follopwing error
javac: invalid flag: ObjectWrite/
Looking forward for the solution
Thnks
Rompom_1

You have a space between '\' and 'x'

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