Java Console Progress Bar

ConsoleProgressBar.java

import java.io.IOException;

/**
 * Simple console progress bar
 *
 * Usage:
 *
 *	final int MAX = new Random().nextInt(256);
 *	System.out.println("MAX: " + MAX);
 * 	ConsoleProgressBar progressBar = new ConsoleProgressBar(MAX);
 *	for (int i=0; i<=MAX; i++) {
 *		progressBar.progress(i);
 *		Thread.sleep(100);
 *	}
 */
public final class ConsoleProgressBar {
	private static final String BEGIN = "\r|";
	private static final char END = '|';
	private static final char EMPTY = '-';
	private static final char FILL = '*';
	private static final int OFFSET = BEGIN.length();
	private static final int LENGTH = 60;

	private final String template = createTemplate();
	private final int maxPosition = template.length() - OFFSET;

	private final int maxValue;

	public ConsoleProgressBar(int maxValue) {
		this.maxValue = maxValue;
	}

	public void progress(int value) {
		int position = maxPosition;
		position = calculatePosition(value, position);
		String s = buildProgressBarString(value, position);
		printProgressBar(s);
	}

	private int calculatePosition(int value, int position) {
		if (value < maxValue) {
			position = (int) (maxPosition * (value / ((double) maxValue))) + OFFSET;
			position = (position > maxPosition) ? maxPosition : position;
		}
		return position;
	}

	private String buildProgressBarString(int value, int position) {
		StringBuilder sb = new StringBuilder();
		sb.append(template.substring(0, position));

		int l = maxPosition - position;
		if (l > 0) {
			sb.append(fill(l));
		}

		sb.append(END);
		sb.append(": ");
		sb.append(value);
		return sb.toString();
	}

	private static char[] fill(int length) {
		char[] r = new char[length];
		for(int i = 0; i < r.length; i++) {
			r[i] = EMPTY;
		}
		return r;
	}

	private static void printProgressBar(String s) {
		try {
			System.out.write(s.getBytes());
		} catch (IOException e) {
			throw new RuntimeException(e);
		}
	}

	private static String createTemplate() {
		StringBuilder sb = new StringBuilder(BEGIN);
		for (int i = 0; i< LENGTH; i++) {
			sb.append(FILL);
		}
		sb.append(END);
		return sb.toString();
	}
}