Brainfuck interpreter

Brainfuck.java

/*
 * This is a small Brainfuck interpreter written in Java by Chris Olszewski
 */

import java.util.Scanner;

public class Brainfuck {
	private short[] data;
	private char[] code;
	private int pointer, codeReader;
	private String dirtyCode;

	public Brainfuck(String code) {
		dirtyCode = code;
	}

	public void run () {
		init();
		code = dirtyCode.replaceAll("[^\\[\\]+\\-.,<>]", "").toCharArray();
		while (codeReader < code.length) {
			switchBoard(code[codeReader]);
		}
	}

	private void init () {
		data = new short[300];
		for (int i = 0; i < data.length; i++) {
			data[i] = 0;
		}
		pointer = 0;
		codeReader = 0;
	}

	private void switchBoard(char command) {
		switch (command) {
			case '+':
				data[pointer]++;
				break;
			case '-':
				data[pointer]--;
				break;
			case '>':
				pointer++;
				break;
			case '<':
				pointer--;
				break;
			case '.':
				System.out.print((char)data[pointer]);
				break;
			case ',':
				// Takes a char
				Scanner input = new Scanner(System.console().readLine());
				data[pointer] = input.nextShort();
				input.close();
				break;
			case '[':
				// continues on
				break;
			case ']':
				if (data[pointer] != 0) {
					// goes back to corresponding [
					int required = 1;
					while (required > 0) {
						codeReader--;
						if (code[codeReader] == ']') {
							required++;
						} else if (code[codeReader] == '[') {
							required--;
						}
					}
				}
				break;
		}
		codeReader++;
	}
}