why PROGRAM is to be saved with the NAME of CLASS in JAVA

Question

if its not saved with the name of class .....the the compliler says the class not found

Answer 1

ty...

Answer 2

u can save your file name with any name only when your class is no type that is if you remove public then you can save it by any name

Answer 3

and if its wid public keyword then why is it compulsary to save wid class name

Answer 4

it is compulsory because it tells jvm that it is the entry point