Can't import package from package

Question

Ok, here's the deal:
In a folder i have some class files, and some packages i made myself.
lets say one package is package1, and the other is package2
now in the root folder i can have a class file that has the statement
import package2.*;and it works fine.
but in a class file that is in package1 i get a compile error when i type
import package2.*;so the question is:
how do i use the class files in one package in another package?
I see sun does it all the time.
example the Graphics2D class:
package java.awt;
import java.awt.RenderingHints.Key;
import java.awt.geom.AffineTransform;
import java.awt.image.ImageObserver;
import java.awt.image.BufferedImageOp;
import java.awt.image.BufferedImage;
import java.awt.image.RenderedImage;
import java.awt.image.renderable.RenderableImage;
import java.awt.font.GlyphVector;
import java.awt.font.FontRenderContext;
import java.awt.font.TextAttribute;
import java.text.AttributedCharacterIterator;
import java.util.Map;that imports a package that isn't in awt, even though the class file itself is in awt

Answer 1

when you compile, compile from the root folder:
root folder> javac package1/sourcecode.java