Two classes cannot be put in a .java file

Twoclassescannotbeputin
a.java file.
Forexample
:
publicclassFinalTest
{
String
color="yellow";
 
publicvoidgetMes()
{
System.out.println("parent
class variable of color: "+color);
}
 
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////////
publicclasstest
extendsFinalTest
{
String color="blue";

publicvoidgetMes()
{
System.out.println("child class variable of color: "+color);
}
 
public
staticvoidmain (String[] args)
{
test t=newtest();
 
t.getMes();
}
}

Thought it's a simply programming ,it took me nearly half an hour to check out where goes wrong.---I put them in a same .java file ,and hadn't create a test.java in the package folder.


PS:A function which is the type of final cannot be rewrite in its child class .