Can you place packages which need eachother in 1 dir?

Question

Hello I have a question about packages.
I have 3 java programs.
prog1 prog2 prog3.
prog1 needs variables from prog2 and prog3
prog2 needs variables from prog3
I saw some examples with packages and they are all in an other directory. Is it possible to place prog2 and 3 in 1 directory so that prog2 can get the variables needed from prog3?
Now I have
In prog3
package program;
In prog2
import program.prog3
programdir/program
   |                       |
prog1/2        prog3

Answer 1

I saw some examples with packages and they are all in
an other directory. Is it possible to place prog2 and
3 in 1 directory so that prog2 can get the variables
needed from prog3?Let the directory structure reflect the package structure. javac as well as java
have convenient flags for that. Here's an example: your main directories look
like this:c:\java\src
c:\java\classesSuppose you have three .java sources: prog1.java, prog2.java and prog3.java
in the packages pack1, pack1.sub, pack2. The sources must be stored like this:c:\java\src\pack1\prog1.java
c:\java\src\pack1\sub\prog2.java
c:\java\src\pack2\prog3.javachange directory to c:\java\src, and type the following:javac -cp ..\classes -d ..\classes pack1\prog1.java pack1\sub\prog2.java pack2\prog3.javaThis line will compile all three source files in one sweep. Note the '-d ..\classes'
flag. This tells the compiler where to store the .class files. The '-cp ..\classes'
flag tells the compiler where any other .class files can be found.
When the compiler has finished, your .class files will be stored here:c:\java\classes\pack1\prog1.class
c:\java\classes\pack1\sub\prog2.class
c:\java\classes\pack2\progr3.classSuppose the prog1 class contains a main method. You run it like this (you're
still in c:\java\src as the current directory):java -cp ..\classes pack1.prog1Et voila!
kind regards,
Jos