package com.imooc.test;

public class Book {
    private int BookNumber;
    private String BookName;
    public float  TheBookPrice;
    public Book(){}
    public Book(int bookNumber, String bookName, float theBookPrice) {
        BookNumber = bookNumber;
        BookName = bookName;
        TheBookPrice = theBookPrice;
    }
    @Override
    public String toString() {
        return "Book{" +
                "图书编号=" + BookNumber +
                ", 图书名称='" + BookName + '\'' +
                ", 图书价格=" + TheBookPrice +
                '}';
    }
}

​public void zybc3() throws Exception {
    Class class1 = Class.forName("com.imooc.test.Book");
    Field field = class1.getDeclaredField("BookName");
    Book book =(Book) class1.newInstance();
    field.setAccessible(true);
    field.set(book,"新华字典");
    Object obj = field.get(book);
    System.out.println(obj);
    System.out.println(book);
}
/**
 * 通过Field获得图书价格属性，为图书价格设置新值并输出
 */
public void zybc4() throws Exception {
    Class class1 = Class.forName("com.imooc.test.Book");
    Field field = class1.getField("TheBookPrice");
    Book book  = (Book) class1.newInstance();
    field.set(book,135.00f);
    Object obj = field.get(book);
    System.out.println(obj);
}
public static void main(String[] args) {
    Test test = new Test();
    try {
        test.zybc3();
        test.zybc4();
    } catch (Exception e) {
        e.printStackTrace();
    }

}