error compiling java file with same class(different case) in a file

FULL PRODUCT VERSION :


ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7600]

A DESCRIPTION OF THE PROBLEM :
public class rabbit{
    public static void main(String[] args){
}
}
class Rabbit1{
    int i;
char c;
}
compile it only get "Rabbit.class" without rabbit.class. It works well in Linux, so I believe it's a bug.

REGRESSION. Last worked in version 6u26

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1.write in "rabbit.java" with
public class rabbit{
    public static void main(String[] args){
        Rabbit t1 = new Rabbit();
        Rabbit t2 = new Rabbit();
        t1.i=9;
        t2.c='x';
System.out.println("i="+t1.i);
System.out.println(t2.c);
}
}
class Rabbit1{
    int i;
char c;
}
2. javac rabbit.java


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
"rabbit.class" and "Rabbit.class" are Generated
ACTUAL -
only "Rabbit.class" is Generated

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
"rabbit.java"
public class rabbit{
    public static void main(String[] args){
        Rabbit t1 = new Rabbit();
        Rabbit t2 = new Rabbit();
        t1.i=9;
        t2.c='x';
System.out.println("i="+t1.i);
System.out.println(t2.c);
}
}
class Rabbit1{
    int i;
char c;
}
---------- END SOURCE ----------