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You still have a problem where you are NOT checking the char in the &quot;real&quot; column of the board, but you are checking the columns that have '|' characters too. I would recommend that you remove all the | and _ characters from your array. Keep the array just for the state if there is a RED, BLACK or empty piece. You can add all the | and _ drawing characters when you print out the board.<br />
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The other problem is that the array that you call &quot;f&quot; contains characters like R, Y, &nbsp;, |, _ &nbsp;but in your checkWins method you are comparing them to ints such as RED and BLACK.
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You still have a problem where you are NOT checking the char in the "real" column of the board, but you are checking the columns that have '|' characters too. I would recommend that you remove all the | and _ characters from your array. Keep the array just for the state if there is a RED, BLACK or empty piece. You can add all the | and _ drawing characters when you print out the board.

The other problem is that the array that you call "f" contains characters like R, Y,  , |, _  but in your checkWins method you are comparing them to ints such as RED and BLACK.

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My method for checking for a horizontal win is not working any help is greatful<br />
<a href="https://filedb.experts-exchange.com/incoming/2015/12_w51/1055252/MainFile.java" target="_blank" class="file-inline" title="MainFile.java (812 bytes)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>MainFile.java</a><br />
<a href="https://filedb.experts-exchange.com/incoming/2015/12_w51/1055253/ConnectFourGame.java" target="_blank" class="file-inline" title="ConnectFourGame.java (1 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>ConnectFourGame.java</a>
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MainFile.java

ConnectFourGame.java

My method for checking for a horizontal win is not working any help is greatful

Tic Tac Toe Java checking for a win

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