@Override
	public void checkOut(String borrower, String date) {
			if(state == 0){
				
			 this.borrower =borrower;
			 this.checkOutDate = date;
			 this.state =1;
					
			 System.out.println("*"+this.title+"() Ǿϴ.");
			 System.out.println(":"+ this.borrower);
			 System.out.println(":"+ this.checkOutDate);
				}else{
			 System.out.println(" Ұ մϴ.");}
				}