code: @Override
  	public String getZipCode() {
  		StringBuilder sb = new StringBuilder();
  		for (int i = 0; i < 5; i++) {
  			sb.append(random.nextInt(10));
  		}
  		return sb.toString();
  	}
docs: /*
  (non-Javadoc)
  
  @see com.thedeanda.lorem.Lorem#getZipCode()