java对象排序方法

public class BookRes {

		private String bookId;

		private String productId;

		private String bookName;

		private Integer count = 1;

		public String getProductId() {
			return productId;
		}

		public void setProductId(String productId) {
			this.productId = productId;
		}

		public String getBookName() {
			return bookName;
		}

		public void setBookName(String bookName) {
			this.bookName = bookName;
		}

		public Integer getCount() {
			return count;
		}

		public void setCount(Integer count) {
			this.count = count;
		}

		public String getBookId() {
			return bookId;
		}

		public void setBookId(String bookId) {
			this.bookId = bookId;
		}
	}

	public class BookResComparator implements Comparator {

		public int compare(Object o1, Object o2) {
			BookRes b1 = (BookRes) o1;
			BookRes b2 = (BookRes) o2;
			if (b1.getCount() < b2.getCount())
				return 1;
			else {

				return 0;
			}
		}

	}