Trouble with a Java connect 4 program

[marines10]

I'm making a connect 4 like game in Java and everything I choose a column to drop the piece it goes where I want it to however, when I want to drop a piece on top of that I, my program throws an error and makes me select another move. Here's what I'm talking about.

http://i.imgur.com/J4ZN0.png

Could someone please look over my code and tell me what I'm missing here? Thanks

public static void getMove() {


    // -->  to do
    int row1 = 5, row2 = 5, row3 = 5, row4 = 5, row5 = 5, row6 = 5, col,  row = 0;
    String tmp;


    System.out.println("Select your move");
    System.out.println("Column");
    System.out.println("hey");
    tmp = TextIO.getln();
    col = Integer.parseInt(tmp);

    if (col == 1){
        col--;
        row1 = row;
        row1--;
    }

    else if (col == 2){
        col--;
        row = row2;
    }

    else if (col == 3){
        col--;
        row = row3;
    }

    else if (col == 4){
        col--;
        row = row4;
    }

    else if (col == 5){
        col--;
        row = row5;
    }
    else{
        col--;
        row = row6;
    }

    while(!game.playerClicked(row, col)){
        System.out.println("Please select a valid move");


        System.out.println("Select your move");
        System.out.println("Column");
        tmp = TextIO.getln();
        col = Integer.parseInt(tmp); 
    }

    //System.out.println(row);



}

public boolean playerClicked (int r, int c) {
if ( /*r < 0 || r > 5 || */ c < 0 || c > 6) return false;
if ( data[r][c] != MARK_NONE) return false;

        // valid row, col and cell
        if ( gameState == GAME_STATE_O_TURN) {
            data[r][c] = MARK_O;
            gameState = GAME_STATE_X_TURN;
        }
        else if ( gameState == GAME_STATE_X_TURN) {
            data[r][c] = MARK_X;
            gameState = GAME_STATE_O_TURN;
        }

        updateGame();  // winner?, tie?
        return true;  // move was successfully made
    }

Also, any comments or suggestions are welcomed too.

Thanks

[NormR1]

my program throws an error

Please post the full text of the error messsage.

[marines10]

Thanks but I got it figured out. I could use some help figuring out how to detect if there's a winner for games that look like this:
http://i.imgur.com/c7olh.png

It's no problem detecting 3 or 4 in a row but when you add the little "L" shaped piece is really complicates things.