java - Missing return statement due to If condition -

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so have following function:

int digitsum(int n){     int s = n;     if(n < 10)          return s;          while(s > 0){         n = s + n % 10;         s = n / 10;     }     digitsum(n); }

i want take number , sum of digits , want keep doing until end single digit number. can understand here, if statement causing error during compilation, says missing return statement , highlights last } .

can me this?

in non-void function , every function call must trace return statement , java says

every execution path in function must lead return statement

so add return digitsum(n);

according rule in java , if condition if(n < 10) false there no further return statement exists either there should default return statement or there should other return statement in conditional else case.


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