Centering text in a console window

StringUtils.java

package org.x3chaos.lel;

/**
 * Some utilities for formatting Strings in console windows
 */
public class StringUtils {

	/**
	 * Generates a String that contains the given line, centered with spaces
	 * inside the given width; used to create centered headers or the like. If
	 * the given width is shorter than the line itself, no changes will be made.
	 * 
	 * @param line
	 *            The line to center
	 * @param width
	 *            The width in which to center the line (i.e. the width of the
	 *            terminal window)
	 * @return A String
	 */
	public static String center(String line, int width) {
		// if the width is longer than the line, no changes
		if (width < line.length()) return line;

		int totalSpaces = width - line.length();
		int pre = totalSpaces / 2;
		int post = totalSpaces - pre;

		/*
		 * the above line may look weird, but so is integer division. basically,
		 * an integer divided by an integer, stored in an integer variable, will
		 * always truncate any remaining decimal, thus essentially rounding it
		 * down. so if totalSpaces is odd (i.e. 15), the generated line won't
		 * fill the width (15 / 2 = 7, in integer division, and 7 + 7 = 14, and
		 * obviously 14 != 15). so yeah.
		 */

		return createSpaces(pre) + line + createSpaces(post);
	}

	/**
	 * Generates a String containing the given number of spaces. Returns an
	 * empty string for arguments that are less than or equal to zero.
	 * 
	 * @param count
	 *            The number of spaces
	 * @return a String that contains the given number of spaces
	 */
	public static String createSpaces(int count) {
		StringBuilder result = new StringBuilder();
		for (int i = 0; i < count; i++) {
			// if count <= 0, this loop will never even run, so it's fine to
			// exclude that check
			result.append(" ");
		}
		return result.toString();
	}

}

TestingClass.java

package org.x3chaos.lel;

/**
 * A testing class for StringUtils.java
 */
public class TestingClass {

	private static final int WIDTH = 80; // standard Windows console width

	public static void main(String[] args) {
		String s1 = "Header"; // 6 characters
		String s2 = "======="; // 7 characters

		print(StringUtils.center(s1, WIDTH));
		print(StringUtils.center(s2, WIDTH));
	}

	public static void print(String line) {
		System.out.printf("|%s|\n", line);
	}
}