Doubt on recursion logic

I tried using the approach of recursion that I will work only on the first column to solve sudoku and rest recursion would do itself. Tried the code but at places I am going wrong which I have highlighted in my code below. Please review and help me with the same.

@PThak2018
You code is giving some kind of compilation error. Please correct it first as I have no experience in java. I’ll check your logic then.

check the above code now

@shrm.abhishek.kmr @aman212yadav @Mohitpandey29
Please help on this sudoku solver problem. I have given my code in earlier comments. Let me know in case you are not able to access it.

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