我无法将文件代码写入错误消息 - writeFile无法解析。我试图将棋盘位置写入文本文件，以便可以保存游戏。如果用户选择保存游戏，那么它应该调用一个新的子程序，将子文件写入文件。
/*
* Skeleton program code for the AQA COMP1 Summer 2016 examination
* This code to be used in conjunction with the Preliminary Material
* written by the AQA Programmer Team
* Developed in the NetBeans 7.3.1. programming environment
* Additional classes AQAConsole2016, AQAReadTextFile2016 and
* AQAWriteTextFile2016 may be used.
*
* A package name may be chosen and private and public modifiers added -
* permission to make these changes to the Skeleton Program does not need
* to be obtained from AQA or the AQA Programmer
*/
import java.util.Random;
public class Aaa {
AQAConsole2016 console = new AQAConsole2016();
Random random = new Random();
int boardSize;
public Aaa() {
char choice;
String playerName;
// int boardSize;
boardSize = 6;
playerName = "";
do {
displayMenu();
choice = getMenuChoice(playerName);
switch (choice) {
case 'p' : playGame(playerName, boardSize);
break;
case 'e' : playerName = getPlayersName();
break;
case 'c' : boardSize = changeBoardSize();
break;
}
} while (choice != 'q');
}
void setUpGameBoard(char[][] board, int boardSize) {
for (int row = 1; row <= boardSize; row++) {
for (int column = 1; column <= boardSize; column++) {
if (row == (boardSize + 1) / 2 && column == (boardSize + 1) / 2 + 1 || column == (boardSize + 1) / 2 && row == (boardSize + 1) / 2 + 1) {
board[row][column] = 'C';
} else {
if (row == (boardSize + 1) / 2 + 1 && column == (boardSize + 1) / 2 + 1 || column == (boardSize + 1) / 2 && row == (boardSize + 1) / 2) {
board[row][column] = 'H';
} else {
board[row][column] = ' ';
}
}
}
}
}
int changeBoardSize() {
int boardSize;
do {
console.print("Enter a board size (between 4 and 9): ");
boardSize = console.readInteger("");
} while (!(boardSize >= 4 && boardSize <= 9));
return boardSize;
}
int getHumanPlayerMove(String playerName) {
int coordinates;
console.print(playerName + " enter the coordinates of the square where you want to place your piece: ");
coordinates = console.readInteger("");
return coordinates;
}
int getComputerPlayerMove(int boardSize) {
return ((random.nextInt(boardSize) + 1) * 10 + (random.nextInt(boardSize) + 1));
}
boolean gameOver(char[][] board, int boardSize) {
for (int row = 1; row <= boardSize; row++) {
for (int column = 1; column <= boardSize; column++) {
if (board[row][column] == ' ')
return false;
}
}
return true;
}
String getPlayersName() {
String playerName;
console.print("What is your name? ");
playerName = console.readLine();
return playerName;
}
boolean checkIfMoveIsValid(char[][] board, int move) {
int row;
int column;
boolean moveIsValid;
row = move % 10;
column = move / 10;
moveIsValid = false;
if (((row<=boardSize) &&(row>0)) && ((column<=boardSize) && (column>0))){
if (board[row][column] == ' ') {
moveIsValid = true;
}
}
return moveIsValid;
}
int getPlayerScore(char[][] board, int boardSize, char piece) {
int score;
score = 0;
for (int row = 1; row <= boardSize; row++) {
for (int column = 1; column <= boardSize; column++) {
if (board[row][column] == piece) {
score = score + 1;
}
}
}
return score;
}
boolean checkIfThereArePiecesToFlip(char[][] board, int boardSize, int startRow, int startColumn, int rowDirection, int columnDirection) {
int rowCount;
int columnCount;
boolean flipStillPossible;
boolean flipFound;
boolean opponentPieceFound;
rowCount = startRow + rowDirection;
columnCount = startColumn + columnDirection;
flipStillPossible = true;
flipFound = false;
opponentPieceFound = false;
while (rowCount <= boardSize && rowCount >= 1 && columnCount >= 1 && columnCount <= boardSize && flipStillPossible && !flipFound ) {
if (board[rowCount][columnCount] == ' ') {
flipStillPossible = false;
} else {
if (board[rowCount][columnCount] != board[startRow][startColumn]) {
opponentPieceFound = true;
} else {
if (board[rowCount][columnCount] == board[startRow][startColumn] && !opponentPieceFound) {
flipStillPossible = false;
} else {
flipFound = true;
}
}
}
rowCount = rowCount + rowDirection;
columnCount = columnCount + columnDirection;
}
return flipFound;
}
void flipOpponentPiecesInOneDirection(char[][] board, int boardSize, int startRow, int startColumn, int rowDirection, int columnDirection) {
int rowCount;
int columnCount;
boolean flipFound;
flipFound = checkIfThereArePiecesToFlip(board, boardSize, startRow, startColumn, rowDirection, columnDirection);
if (flipFound) {
rowCount = startRow + rowDirection;
columnCount = startColumn + columnDirection;
while (board[rowCount][columnCount] != ' ' && board[rowCount][columnCount] != board[startRow][startColumn]) {
if (board[rowCount][columnCount] == 'H') {
board[rowCount][columnCount] = 'C';
} else {
board[rowCount][columnCount] = 'H';
}
rowCount = rowCount + rowDirection;
columnCount = columnCount + columnDirection;
}
}
}
void makeMove(char[][] board, int boardSize, int move, boolean humanPlayersTurn) {
int row;
int column;
row = move % 10;
column = move / 10;
if (humanPlayersTurn) {
board[row][column] = 'H';
} else {
board[row][column] = 'C';
}
flipOpponentPiecesInOneDirection(board, boardSize, row, column, 1, 0);
flipOpponentPiecesInOneDirection(board, boardSize, row, column, -1, 0);
flipOpponentPiecesInOneDirection(board, boardSize, row, column, 0, 1);
flipOpponentPiecesInOneDirection(board, boardSize, row, column, 0, -1);
}
void printLine(int boardSize) {
console.print(" ");
for (int count = 1; count <= boardSize * 2 - 1; count++) {
console.print("_");
}
console.println();
}
void displayGameBoard(char[][] board, int boardSize) {
console.println();
console.print(" ");
for (int column = 1; column <= boardSize; column++)
{
console.print(" ");
console.print(column);
}
console.println();
printLine(boardSize);
for (int row = 1; row <= boardSize; row++) {
console.print(row);
console.print(" ");
for (int column = 1; column <= boardSize; column++) {
console.print("|");
console.print(board[row][column]);
}
console.println("|");
printLine(boardSize);
console.println();
}
}
void displayMenu() {
console.println("(p)lay game");
console.println("(e)nter name");
console.println("(c)hange board size");
console.println("(q)uit");
console.println();
}
char getMenuChoice(String playerName) {
char choice;
console.print(playerName + " enter the letter of your chosen option: ");
choice = console.readChar();
return choice;
}
void playGame(String playerName, int boardSize) {
char[][] board = new char[boardSize + 1][boardSize + 1];
boolean humanPlayersTurn;
int move;
int humanPlayerScore;
int computerPlayerScore;
boolean moveIsValid;
setUpGameBoard(board, boardSize);
humanPlayersTurn = false;
int NoOfMoves=0;
do {
humanPlayersTurn = !humanPlayersTurn;
displayGameBoard(board, boardSize);
moveIsValid = false;
do {
if (humanPlayersTurn) {
move = getHumanPlayerMove(playerName);
} else {
move = getComputerPlayerMove(boardSize);
}
moveIsValid = checkIfMoveIsValid(board, move);
} while (!moveIsValid);
if (!humanPlayersTurn) {
NoOfMoves++;
console.println("The number of moves completed so far: " +NoOfMoves);
console.print("Press the Enter key and the computer will make its move");
console.readLine("");
}
makeMove(board, boardSize, move, humanPlayersTurn);
console.println();
String answer = console.readLine("Do you want to save the board? (y/n)");
if (answer.equalsIgnoreCase("y")){
writeBoard(board, boardSize);
console.println("Saved!");
}
} while (!gameOver(board, boardSize));
displayGameBoard(board, boardSize);
humanPlayerScore = getPlayerScore(board, boardSize, 'H');
computerPlayerScore = getPlayerScore(board, boardSize, 'C');
if (humanPlayerScore > computerPlayerScore) {
console.println("Well done, " + playerName + ", you have won the game!");
}
else {
if (humanPlayerScore == computerPlayerScore) {
console.println("that was a draw!");
} else {
console.println("The computer has won the game!");
}
console.println();
}
}
void writeBoard(char[][] board, int boardSize) {
String filename = "myFile.txt";
String piece = null;
writeFile.openFile(filename);
for(int row=1; row<=boardSize; row++){
for (int column = 1; column <= boardSize; column++) {
piece= Character.toString(board [row][column]);
writeFile.writeToTextFile(piece);
}
}
writeFile.closeFile();
}
public static void main(String[] args) {
new Aaa();
}
}
此部分包含错误：
void writeBoard(char[][] board, int boardSize) {
String filename = "myFile.txt";
String piece = null;
writeFile.openFile(filename);
for(int row=1; row<=boardSize; row++){
for (int column = 1; column <= boardSize; column++) {
piece= Character.toString(board [row][column]);
writeFile.writeToTextFile(piece);
}
}
writeFile.closeFile();
}
答案 0 :(得分：0)
有问题的部分包含一个名为writeFile的变量，无法解析。在您共享的类Aaa中没有任何位置，此变量既未声明也未使用其类型的实例进行初始化。所以方法void writeBoard(char[][] board, int boardSize)给出了编译错误。
从这个变量的用法来看，很明显它属于一个具有以下实例方法的类：
1）openFile(String filename)
2）writeToTextFile(String piece)
3）closeFile()
请搜索具有上述方法的类，并查找创建该实例的方法作为方法void writeBoard(char[][] board, int boardSize)中的第一个语句。希望能帮助到你。