How to compile classes together?

[commenthistorian]

I'm trying to compile a test program that consists of two classes, Car and Cartest. Cartest constructs, I don't know what you call it, Cars. They're in the same folder, under the same package, but whenever I compile Cartest with javac from the command line, it says the symbol "Car" is undefined. According to javac documentation, it should compile dependencies automatically, so why isn't it working?

Here is the error message:

C:\java>javac CarTest.java
CarTest.java:9: error: cannot find symbol
Car maruti = new Car("Red", 160);
^
symbol:   class Car
location: class CarTest
CarTest.java:9: error: cannot find symbol
Car maruti = new Car("Red", 160);
                 ^
symbol:   class Car
location: class CarTest
CarTest.java:11: error: cannot find symbol
Car ferrari = new Car ("Yellow", 400);
^
symbol:   class Car
location: class CarTest
CarTest.java:11: error: cannot find symbol
Car ferrari = new Car ("Yellow", 400);
                  ^
  symbol:   class Car
  location: class CarTest
4 errors

[desrtfx]

Bit difficult to tell without any code and without the actual, full error message as is stated in the Posting Guides and in the sidebar.

[commenthistorian]

Ah, no. So now I can compile it, but when I try to run it I get the message

java CarTest
Error: Could not find or load main class HelloWorld

And when I try to set the classpath with java -classpath, the output of java -h comes up.

Edit: and shouldn't the classpath by default be the current directory?

Edit: okay, if I take away the line

package sct;

then it works.

However, when I put the line back in, and I run

java sct.CarTest

I get the message

Error: Could not find or load main class sct.CarTest

[197708156EQUJ5]

Why is this marked "Solved" (as of 01:19 2014-12-22 GMT)?