Java 当嵌套for循环限制在j<；之外时，为什么我的打印方法无法正确显示；1.

我的任务是将我制作的棋盘打印到控制台上。板的顶部必须有“a”至“h”的边框，左侧垂直向下为1-8。每个首字母都应该与一个字母和一个数字对齐，因此，例如，一个black rook（“bR”）应该放在8处（并且应该在数组中初始化为[0][0]）。当printBoard方法中的内部嵌套for循环限制为j时，switch语句中既没有空的情况，也没有默认情况；当j

现在，您迭代一列的行，但您希望迭代一行的列。交换数组中的i和j

如果要在内部for循环之后使用换行符，请移动

k--

系统输出打印（“\n”+“\n”+k）

进入外部for循环

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这应该已经解决了您的问题。

请查看正确和不正确输出的示例。请看一下

public class Virtual_Chessboard {

    public enum Chessmen{
        WHITE_KING,
        WHITE_QUEEN,
        WHITE_ROOK,
        WHITE_BISHOP,
        WHITE_KNIGHT,
        WHITE_PAWN,
        BLACK_KING,
        BLACK_QUEEN,
        BLACK_ROOK,
        BLACK_BISHOP,
        BLACK_KNIGHT,
        BLACK_PAWN,
        EMPTY
    }

    public static Chessmen[][] chessboard = new Chessmen[8][8];

    public static void createBoard(){


        int rows = 8;
        int columns = 8;

        for(int y=0;y<rows;y++){
            for(int x=0;x<columns;x++){
                if((y==0 && x==0) || (x==7 && y==0) ){
                    chessboard[x][y] = Chessmen.BLACK_ROOK;
                }
                else if((x==1 && y==0)||(x==6 && y==0)){
                    chessboard[x][y] = Chessmen.BLACK_KNIGHT;
                }
                else if((x==2 && y==0)||(x==5 && y==0)){
                    chessboard[x][y] = Chessmen.BLACK_BISHOP;
                }
                else if(x==3 && y==0){
                    chessboard[x][y] = Chessmen.BLACK_KING;
                }
                else if(x==4 && y==0){
                    chessboard[x][y] = Chessmen.BLACK_QUEEN;
                }
                else if((x==0 && y==7)||(x==7 && y==7)){
                    chessboard[x][y]= Chessmen.WHITE_ROOK;
                }
                else if((x==1 && y==7)||(x==6 && y==7)){
                    chessboard[x][y] = Chessmen.WHITE_KNIGHT;
                }
                else if((x==2 && y==7)||(x==5 && y==7)){
                    chessboard[x][y] = Chessmen.WHITE_BISHOP;
                }
                else if(x==3 && y==7){
                    chessboard[x][y] = Chessmen.WHITE_KING;
                }
                else if(x==4 && y==7){
                    chessboard[x][y] = Chessmen.WHITE_QUEEN;
                }
                else if(y==1){
                    chessboard[x][y] = Chessmen.BLACK_PAWN;
                }
                else if(y==6){
                    chessboard[x][y] = Chessmen.WHITE_PAWN;
                    }
                else{
                    chessboard[x][y] = Chessmen.EMPTY;
                }
            }
        }
    }

    public static void printBoard(Chessmen[][] chessboard){
        int k = 8;
        System.out.print("\t"+"a" + "\t" + "b" + "\t" + "c" + "\t" + "d" +  "\t" + "e"+ "\t" + "f" + "\t" + "g" + "\t" + "h" + "\n" + k);
        for(int i = 0; i<8;i++){
            for(int j = 0;j<8;j++){
                System.out.print("\t");
                switch(chessboard[i][j]){
                case WHITE_KING : System.out.print("WK");
                break;
                case WHITE_QUEEN : System.out.print("wQ");
                break;
                case WHITE_ROOK : System.out.print("wR");
                break;
                case WHITE_BISHOP : System.out.print("wB");
                break;
                case WHITE_KNIGHT : System.out.print("wK");
                break;
                case WHITE_PAWN : System.out.print("wP");
                break;
                case BLACK_KING : System.out.print("BK");
                break;
                case BLACK_QUEEN : System.out.print("bQ");
                break;
                case BLACK_ROOK : System.out.print("bR");
                break;
                case BLACK_BISHOP : System.out.print("bB");
                break;
                case BLACK_KNIGHT : System.out.print("bK");
                break;
                case BLACK_PAWN : System.out.print("bP");
                break;

                } //switch

            } /// j for 


        } //i for
        k--;
        System.out.println("\n" + "\n"+k);
    }

    public static void main(String[] args) {


        createBoard();
        printBoard(chessboard);

    }

}