Compiling and running files in a package

Story(Skip this part and continue to main part if you have a short time):

Today I wrote a program in Java that takes String arguments in main method.
Big deal.
And I was successful executing it using eclipse as well.

However, I faced a new problem now. I don't know how to give runtime arguments in main method using eclipse.
So..

I decided to compile it using javac command.

Code:

javac MyJava.java

But wait, the file included package description.
And it was sending me errors saying that it can't find main method when I tried
java MyJava

Main Part

Actually, you have to insert package description in Javac command like this.

Code:

javac -d . MyJava.java

Notice the . after -d

if the Myjava.java has package ios; at its starting, the MyJava.class file will be created in ios folder.
Now you have to execute the class file like this:

Code:

java ios/MyJava

and voila You have learnt how to execute java file using package!!