View Compilation Error

0_0_6131877_21108\Main.java:12: class Hdu1106 is public, should be declared in a file named Hdu1106.java
public class Hdu1106 {
       ^
Note: 0_0_6131877_21108\Main.java uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error