Question

Which of the following declarations are illegal and why? 

1. class abc(...)
2. public class NumberOfDaysWorked(...)
3. private int x;
4. private class abc(...)
5. default key getkey(...)

Answer 1

1. Illegal. The correct statement is class abc{.........}.
2. Illegal. The accurate declaration is public class NumberOfDaysWorked{   ........... }.
3. Legal.
4. Illegal. The accurate expression is class abc{} as Java prohibits top-level classes from be designated as private. Inner or nested classes may be designated as private.
5. Illegal. The correct statement is void getkey(.........).
   Default access does not include a keyword. If there is no access specifier, it is regarded as default/friendly access.