用java写一个简单的五子棋程序。要求输入棋子的坐标，输出获胜的五颗棋子的坐标。行坐标为1到15的数字，纵坐标为A到O的大写字母。

以下是一个简单的五子棋程序，采用命令行输入和输出：

import java.util.Scanner;

public class FiveChess {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        char[][] chessboard = new char[15][15];
        boolean isBlack = true; // 黑棋先手
        boolean isWin = false; // 是否胜利
        char winner = ' '; // 获胜方
        while (!isWin) {
            // 输出当前棋盘
            System.out.println("  A B C D E F G H I J K L M N O");
            for (int i = 0; i < 15; i++) {
                System.out.print((i + 1) + " ");
                for (int j = 0; j < 15; j++) {
                    System.out.print(chessboard[i][j] + " ");
                }
                System.out.println();
            }
            // 输入下一步棋子的坐标
            System.out.print(isBlack ? "黑棋走：":"白棋走：");
            String pos = input.nextLine();
            if (pos.length() != 2 || !Character.isUpperCase(pos.charAt(0)) || !Character.isDigit(pos.charAt(1))) {
                System.out.println("输入格式有误，请重新输入！");
                continue;
            }
            int row = pos.charAt(1) - '1';
            int col = pos.charAt(0) - 'A';
            if (row < 0 || row >= 15 || col < 0 || col >= 15) {
                System.out.println("输入越界，请重新输入！");
                continue;
            }
            if (chessboard[row][col] != ' ') {
                System.out.println("该位置已有棋子，请重新输入！");
                continue;
            }
            // 下棋
            chessboard[row][col] = isBlack ? '●' : '○';
            isWin = checkWinner(chessboard, row, col);
            if (isWin) {
                winner = isBlack ? '黑' : '白';
            }
            isBlack = !isBlack; // 切换下棋方
        }
        // 输出获胜方和获胜的五颗棋子的坐标
        System.out.println(winner + "棋获胜！");
        System.out.print("获胜的五颗棋子的坐标为：");
        for (int i = 0; i < 5; i++) {
            System.out.print("(" + (row + i) + "," + col + ")");
        }
    }

    // 判断是否胜利
    public static boolean checkWinner(char[][] chessboard, int row, int col) {
        char piece = chessboard[row][col];
        int count = 0;
        // 横向判断
        for (int i = Math.max(col - 4, 0); i <= Math.min(col + 4, 14); i++) {
            if (chessboard[row][i] == piece) {
                count++;
            } else {
                count = 0;
            }
            if (count >= 5) {
                return true;
            }
        }
        count = 0;
        // 纵向判断
        for (int i = Math.max(row - 4, 0); i <= Math.min(row + 4, 14); i++) {
            if (chessboard[i][col] == piece) {
                count++;
            } else {
                count = 0;
            }
            if (count >= 5) {
                return true;
            }
        }
        count = 0;
        // 左上到右下斜向判断
        for (int i = Math.max(row - 4, 0), j = Math.max(col - 4, 0); i <= Math.min(row + 4, 14) && j <= Math.min(col + 4, 14); i++, j++) {
            if (chessboard[i][j] == piece) {
                count++;
            } else {
                count = 0;
            }
            if (count >= 5) {
                return true;
            }
        }
        count = 0;
        // 右上到左下斜向判断
        for (int i = Math.max(row - 4, 0), j = Math.min(col + 4, 14); i <= Math.min(row + 4, 14) && j >= Math.max(col - 4, 0); i++, j--) {
            if (chessboard[i][j] == piece) {
                count++;
            } else {
                count = 0;
            }
            if (count >= 5) {
                return true;
            }
        }
        return false;
    }
}

运行程序后，按照提示输入下一步棋子的坐标，例如输入“H8”回车后，黑棋会在第8行第7列下一颗棋子，然后判断是否胜利，如果胜利则输出获胜方和获胜的五颗棋子的坐标。