I created spy life program but it has wrong output, null should not be in output, how to avoid it

Question

Spy life problem solution in java but having some difficulties
https://code.sololearn.com/c9iaZggjBNuN/?ref=app

Answer 1

https://code.sololearn.com/cBwBKnxRFmVh/?ref=app

Answer 2

Akash Thanks man i got solution from your code just did little changes and its working now.
I
Love the support from sololearn peoples they are really helpful...
https://code.sololearn.com/cFixAhuJSusw/?ref=app

Answer 3

So Glad You got the Solution.You're always welcome.