New to Java

I'm using "gcj" to experiment while I'm learning. I'm not new to programming in general but I am new to Java. Java is the first langauge I've programmed in which is not an interpreted language.

I managed to create a basic app with 10 or so classes all directly coded into 1 file. It worked.

Now, I was to break the classes into their own files and put them into a package. I'm pretty sure I've got it close to being right because at first I forgot to declare my class as public and I got errors when compiling.

Now when I compile I get this error (command used to compile also shown for reference):

[d11wtq@pc-cac TestApp]$ gcj --main=App -o runme App.java
/tmp/cc49suIT.o: In function `App::main(JArray<java::lang::String*>*)':
App.java:(.text+0x16): undefined reference to `myPackage::MyClass::class$'
App.java:(.text+0x25): undefined reference to `myPackage::MyClass::MyClass()'
collect2: ld returned 1 exit status
[d11wtq@pc-cac TestApp]$

The paths and code for the files are gievn below:

./App.java

import myPackage.MyClass;

class App
{
        public static void main(String args[])
        {
                MyClass obj = new MyClass();
                obj.speak();
        }
}

./myPackage/MyClass.java

package myPackage;

public class MyClass
{
        public MyClass() {}

        public void speak()
        {
                System.out.println("I'm speaking...");
        }
}

Any pointers as to where I'm going wrong? Is it the code or the way I'm compiling it? If both classes are in the one file it works :(

Message was edited by:
d11wtq