I am trying to compile a simple program which is as follows:

public class A {

public static void main(String args[])
    {
        B b=new B();
    }

}

Above program is in file A.java

second program is in file B.java which is as follows:

public class B { public B() { System.out.println("hello"); } }

compiling A.java there are two errors of can not find symbol: B(pointing below this B) b=new B();

and

B b=new B(pointing below this B)();

I am using windows 7:

when i include both programs A and B inside same file A.java it compiles fine and run as well.But putting class B in different file named B.java compiler complains about not finding class B as explained above. Please help me to find what is wrong with this simple program.