我最近制作了一款 Connect 4 游戏。但是，我在单个 Java 文件/类中完成了所有代码。我现在正在尝试重构我的代码，以便将不同的代码操作拆分到不同的类中。例如玩、反击和棋盘。
有人可以向我解释为什么我会收到以下错误吗？
Exception in thread "main" java.lang.StackOverflowError
at java.nio.Buffer.<init>(Buffer.java:201)
at java.nio.ByteBuffer.<init>(ByteBuffer.java:281)
at java.nio.HeapByteBuffer.<init>(HeapByteBuffer.java:57)
at java.nio.ByteBuffer.allocate(ByteBuffer.java:335)
at sun.nio.cs.StreamDecoder.<init>(StreamDecoder.java:251)
at sun.nio.cs.StreamDecoder.<init>(StreamDecoder.java:231)
at sun.nio.cs.StreamDecoder.forInputStreamReader(StreamDecoder.java:69)
at java.io.InputStreamReader.<init>(InputStreamReader.java:74)
at Connect4Game.<init>(Connect4Game.java:19)
at play.<init>(play.java:2)
at Connect4Game.<init>(Connect4Game.java:21)
at play.<init>(play.java:2)
at Connect4Game.<init>(Connect4Game.java:21)
at play.<init>(play.java:2)
at Connect4Game.<init>(Connect4Game.java:21)
at play.<init>(play.java:2)
at Connect4Game.<init>(Connect4Game.java:21)
at play.<init>(play.java:2)
at Connect4Game.<init>(Connect4Game.java:21)
at play.<init>(play.java:2)
at Connect4Game.<init>(Connect4Game.java:21)
at play.<init>(play.java:2)
at Connect4Game.<init>(Connect4Game.java:21)
at play.<init>(play.java:2)
我真的很感激被指出正确的方向，因为这是我第一次将工作代码重构到多个类中。
这是我的代码:
Connect4Game.java
import java.io.BufferedReader;
import java.io.InputStreamReader;
public class Connect4Game {
final int boardWidth=7;
final int boardHeight=7;
int totalMovesPlayed;
public BufferedReader input;
public char[][] board;
public static void main(String[] args){
new Connect4Game();
}
public Connect4Game(){
board = new char[6][7];
input = new BufferedReader(new InputStreamReader(System.in));
play PlayObj = new play();
PlayObj.playGame();
}
}
play.java
public class play extends Connect4Game {
public void playGame() {
System.out.println("Welcome to Connect 4");
System.out.println("To play the game type in the number of the column you want to drop you counter in");
System.out.println("Player One = r Player 2 = y");
System.out.println("");
board boardObj = new board();
boardObj.printBoard();
boolean win = false;
while(!win){
// player 1
String userInput = getUserInput();
int move = Integer.parseInt(userInput);
counter counterObj = new counter();
counterObj.placeCounter('r', move);
boolean hasWon = false;
int count = 0;
// check horizontal
for(int i=0; i<board.length; i++){
for(int j=0; j<board[i].length; j++){
if(board[i][j] == 'r'){
count = count + 1;
if(count == 4){
hasWon = true;
System.out.println("You Have Won!!!");
}
}
else{
count = 0;
}
}
}
// check vertical
count = 0;
for(int i=0; i<board[0].length; i++){
for(int j=0; j<board.length; j++){
if(board[j][i] == 'r'){
count = count + 1;
if(count >= 4){
hasWon = true;
System.out.println("You Have Won!!!");
}
}
else{
count = 0;
}
}
}
boardObj.printBoard();
if(hasWon){
win = true;
System.out.println("You Have Won!!!");
}
else {
//player 2
userInput = getUserInput();
move = Integer.parseInt(userInput);
counterObj.placeCounter('y',move);
hasWon = false;
count = 0;
// check horizontal
for(int i=0; i<board.length; i++){
for(int j=0; j<board[i].length; j++){
if(board[i][j] == 'y'){
count = count + 1;
if(count >= 4){
hasWon = true;
System.out.println("You Have Won!!!");
}
}
else{
count = 0;
}
}
}
// check vertical
count = 0;
for(int i=0; i<board[0].length; i++){
for(int j=0; j<board.length; j++){
if(board[j][i] == 'y'){
count = count + 1;
if(count >= 4){
hasWon = true;
System.out.println("You Have Won!!!");
}
}
else{
count = 0;
}
}
}
boardObj.printBoard();
if(hasWon){
win = true;
System.out.println("You Have Won!!!");
}
}
}
}
public String getUserInput(){
String toReturn = null;
try{
toReturn = input.readLine();
}
catch(Exception e){
}
return toReturn;
}
}
board.java
public class board extends Connect4Game {
public void printBoard(){
for(int i=0;i<board.length;i++){
for(int j=0;j<board[0].length;j++){
if(board[i][j] == 0)
System.out.print(". ");
else
System.out.print(board[i][j]+" ");
}
System.out.println();
}
for(int i=0;i<boardWidth;i++)
System.out.print("* ");
System.out.println();
for(int i=0;i<boardWidth;i++)
System.out.print(i+" ");
System.out.println();
}
}
counter.java
public class counter extends Connect4Game {
public void placeCounter(char player, int position){
boolean placed = false;
if(player == 'r'){
for( int i=board.length-1; i>=0; i--){
if(!placed && board[i - 1][position] != 'r' && board[i - 1][position] != 'y') {
if(board[i][position] == 'y'){
board[i-1][position] = 'r';
placed = true;
}
else if(board[i][position] != 'r'){
board[i][position] = 'r';
placed = true;
}
}
}
}
else {
for( int i=board.length-1; i>=0; i--){
if (!placed && board[i - 1][position] != 'r' && board[i - 1][position] != 'y'){
if(board[i][position] == 'r'){
board[i-1][position] = 'y';
placed = true;
}
else if(board[i][position] != 'y'){
board[i][position] = 'y';
placed = true;
}
}
}
}
}
}
最佳答案
在 Connect4Game 的构造函数中，您正在调用子类 play 的构造函数，但该子类没有自己的构造函数，因此您实际上是在为再次 Connect4Game，然后调用自身，依此类推，直到堆栈溢出
public Connect4Game(){
board = new char[6][7];
input = new BufferedReader(new InputStreamReader(System.in));
play PlayObj = new play();
PlayObj.playGame();
}
你的main方法应该直接创建一个play对象然后调用playGame方法
public static void main(String[] args){
play PlayObj = new play();
PlayObj.playGame()
}
请遵循 java 命名标准，让你的类以大写字母开头
关于java - 为什么将我的代码拆分到不同的类时会出现堆栈溢出错误？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55892014/