// This program creates and prints out a string of 100,000 "x" characters.
// An illustration of the usefulness of the StringBuilder class.

public class StringPlay {
	public static void main(String[] args) {
		long start = System.currentTimeMillis();
		
		StringBuilder sb = new StringBuilder(1000000);
		for (int i = 0; i < 800000; i++) {
			// s += "x";
			sb.append("x");
		}
		String s = sb.toString();
		long end = System.currentTimeMillis();

		System.out.println(s);
		System.out.println("took " + (end - start) + " ms");
	}
}