DataInputStream和DataOutputStream的简单应用

package com.study;public class Books {private String book_name;private String book_date;private int money;public Books(String book_name,String book_date,int money) {this.book_name = book_name;this.book_date = book_date;this.money = money;}public String getBook_name() {return book_name;}public void setBook_name(String book_name) {this.book_name = book_name;}public String getBook_date() {return book_date;}public void setBook_date(String book_date) {this.book_date = book_date;}public int getMoney() {return money;}public void setMoney(int money) {this.money = money;}}

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