Method that compares the scores of two players
As Timothy mentioned, your naming of the variables are not so good. I would recommend you have a look at Java Naming Conventions. It will be helpful for writing easily readable codes.

Secondly, try using private for your method. I know it is not a big program, but you will get used to it.

Thirdly, the beauty of the code is in shortness and effectiveness. And here I took Timothy's code and wrote it with for loop:

int[] scoresOfPlayerA = new int[]{a0,a1,a2};
int[] scoresOfPlayerB = new int[]{b0,b1,b2};

for (int i = 0; i &lt; scoresOfPlayerA.length; i++){
    if (scoresOfPlayerA[i] &gt; scoresOfPlayerB[i]){
        finalScoreOfA++;
    } else if (scoresOfPlayerA[i] &lt; scoresOfPlayerB[i]) {
        finalScoreOfB++;
    }
}

return new int[]{finalScoreOfA, finalScoreOfB};


Good luck with your future codes.