UVa 00227 - Puzzle (parse the input, array manipulation)

Link: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=4&page=show_problem&problem=163
Sol:

import java.util.Scanner;
	import java.io.*;
	/* The hardest part of this problem was to read input with Java */
	/* This will only work with ANSI encoded files used for input */
	class Board {
	public int m, n;
	public int i, j; // empty square
	char map[][];
	public Board(int m, int n) {
	this.m = m;
	this.n = n;
	map = new char[m][n];
	for (int i = 0; i < m; i++)
	for (int j = 0; j < n; j++)
	map[i][j] = ' ';
	}
	public char getItem(int x, int y) {
	return map[x][y];
	}
	boolean makeMove(char move) {
	switch(move) {
	case 'A':
	if (!isOnTheBoard(i-1, j))
	return false;
	map[i][j] = map[i-1][j];
	map[i-1][j] = ' ';
	i = i - 1;
	break;
	case 'B':
	if (!isOnTheBoard(i+1, j))
	return false;
	map[i][j] = map[i+1][j];
	map[i+1][j] = ' ';
	i = i + 1;
	break;
	case 'R':
	if (!isOnTheBoard(i, j+1))
	return false;
	map[i][j] = map[i][j+1];
	map[i][j+1] = ' ';
	j = j + 1;
	break;
	case 'L':
	if (!isOnTheBoard(i, j-1))
	return false;
	map[i][j] = map[i][j-1];
	map[i][j-1] = ' ';
	j = j - 1;
	break;
	default:
	return false;
	}
	return true;
	}
	public void setItem(int x, int y, char item) {
	//System.out.println(x + " " + y + ":" + item + ":");
	if (item == ' ') {
	i = x;
	j = y;
	}
	map[x][y] = item;
	}
	private boolean isOnTheBoard(int i, int j) {
	return i >= 0 && j >= 0 && i < m && j < n;
	}
	@Override
	public String toString() {
	StringBuilder builder = new StringBuilder();
	for (int i = 0; i < n; i++) {
	for (int j = 0; j < n; j++) {
	builder.append(map[i][j] + (j<(n-1)?" ":""));
	}
	builder.append("\n");
	}
	return builder.toString();
	}
	}
	public class Main {
	public static void main(String[] args) throws Exception {
	//Scanner in = new Scanner (new FileReader(new File("proba.txt")));
	BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
	String line;
	int tc = 0;
	while (true) {
	char c = (char) in.read();
	if (c == 'Z')
	break;
	if (++tc != 1) {
	System.out.println();
	}
	Board board = new Board(5, 5);
	board.setItem(0, 0, c);
	for (int j = 1; j < 5; j++) {
	c = (char) in.read();
	//System.out.println("|c|");
	board.setItem(0, j, c);
	}
	//skip newline
	in.readLine();
	for (int i = 1; i < 5; i++) {
	for (int j = 0; j < 5; j++) {
	c = (char) in.read();
	//System.out.println("|" + c + "|");
	board.setItem(i, j, c);
	}
	in.readLine(); // skip newline
	}
	boolean legalMove = true;
	boolean done = false;
	while (!done) {
	line = in.readLine();
	for (int i = 0; i < line.length(); i++) {
	char move = line.charAt(i);
	if (move == '0') {
	done = true;
	break;
	}
	if (legalMove) {
	legalMove = board.makeMove(move);
	}
	}
	}
	System.out.println("Puzzle #" + tc + ":");
	if (legalMove) {
	System.out.print(board);
	} else {
	System.out.println("This puzzle has no final configuration.");
	}
	}
	}
	}