Chess960V4+move.java

/*
Chess960V4.java     MrG     2012.0227
purpose:    reads 960.txt and prints 1 random board
required files: Chess960V4.java             main class
        EasyReader.java             file I/O class
translator: javac Chess960V4.java
interpreter:    java Chess960V4
*/

//imported classes
import java.util.Random;
import java.util.Scanner;

//main class
public class Chess960V4
{
    public static final int NUM_BOARDS = 960;
    public static final int SIZE = 8;
    public static void main(String[] args)
    {
        Scanner in = new Scanner(System.in);
        String[][] board = new String[SIZE][SIZE];

        Random pick = new Random();
        int choice = pick.nextInt(NUM_BOARDS-1)+1;

        String temp = "";
        EasyReader ross = new EasyReader("960.txt");
        for(int i = 0; i<choice; i++)
        {
            temp = ross.readLine();
        }
        System.out.println(temp);
        System.out.println(temp.length());
        initBoard(temp, board);
        System.out.println(toString(board));
        while(true)
        {
            System.out.print("enter r1: ");
            int r1=in.nextInt();
            System.out.print("enter c1: ");
            int c1=in.nextInt();
            System.out.print("enter r2: ");
            int r2=in.nextInt();
            System.out.print("enter c2: ");
            int c2=in.nextInt();
            move(r1,c1,r2,c2,board);
            System.out.println(toString(board));
        }
    }

    public static void move(int r1, int c1, int r2, int c2, String [][] board)
    {
        board[7-r2][c2] = board[7-r1][c1];
        board[7-r1][c1] = null;
    }

    public static void initBoard(String in, String[][] out)
    {
        for(int c = 0; c<SIZE; c++)
        {
            out[0][c]=in.substring(c+in.length()-8,c+in.length()-7).toLowerCase();
            out[1][c]="p";
            out[6][c]="P";
            out[7][c]=in.substring(c+in.length()-8,c+in.length()-7);
        }
    }

    public static String toString(String[][] out)
    {
        String temp = "";
        for(int r = 0; r<SIZE; r++)
        {
            temp += 7-r+"||";
            for(int c = 0; c<SIZE; c++)
            {
                if(out[r][c]==null)
                {
                    temp += " _ ";
                }
                else
                {
                    temp += " "+out[r][c]+" ";
                }
            }
            temp += "\n\n";
        }
        temp += "   ========================\n";
        temp += "    0  1  2  3  4  5  6  7 ";
        return temp;
    }
}