Confused about how packages work.

Say I have these two classes, in separate files, MyTest.java,
MyOtherTest.java

package edu.newpack.test

class MyTest {

MyOtherTest mOT;

MyTest() {
}
}



package edu.newpack.test

class MyOtherTest {

MyOtherTest() {
}
}

When I compile MyTest.java with javac MyTest.java in the directory
where both are located why does it say it cannot find MyOtherTest.java
..

Both files are in c:\sources\edu\newpack\test\
I can compile MyOtherTest.java just fine. If I import the package I
don't get the symbol not found error, but I thought if both classes
were in the same package I didn't have to import anything.

thanks

.