((NEWBIE to JAVA)) prob while compiling java prog using command prompt

prob when i am creating package
during compilation i got some error like:

Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\rahuls>cd desktop

C:\Users\rahuls\Desktop>cd javap

C:\Users\rahuls\Desktop\javap>javac Mathclass.java

C:\Users\rahuls\Desktop\javap>java -d . Mathclass.java
Unrecognized option: -d
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

C:\Users\rahuls\Desktop\javap>

MY package code is:
package p1;
public class Mathclass
{
public int add(int a,int b)
{
return a+b;
}
}

pls reply fast…

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