public static void writeLargeFile(){
		(new Thread() {
			public void run() {
				for (int i = 1; i <= 10; i++) {
					StringBuffer sb = new StringBuffer();
					for (int j = 0; j < 100000; j++) {
						sb.append("chris");
					}
					FileProcess.write("demo" + i + ".txt", sb.toString());
				}
			}
		}).start();
	}