java求解一道题

[「已注销」]

[iamjsber]

这样的题 我觉得你只能自己写 然后出问题了再来问 不然 你在这放着 10年也没人给你解答

[小七和十一的爸爸]

楼主 很简单的，自己写写吧

[nhscx]

这样的题建议自己先写一遍，不懂再来问

[ぺ芒果゜]

public class Books{
     private String bookId;
     private String bookName;
     private float bookPrice;

    public String getBookId(){
		return bookId;
	}
	public void setBookId(String bookId){
		this.bookId=bookId;
	}
    public String getBookName(){
		return bookName;
	}
	public void setBookName(String bookName){
		this.bookName=bookName;
	}
	public float getBookPrice(){
		return bookPrice;
	}
	public void setBookPrice(float bookPrice){
		this.bookPrice=bookPrice;
	}
}

public class TeachingMaterial extends Books{
     private String author;
     private float circulation;

   // get\set, 如果使用了Lombok
   
	public String getAuthor(){
		return author;
	}
	public void setAuthor(String author){
		this.author=author;
	}
    public float getCirculation(){
		return circulation;
	}
	public void setCirculation(float circulation){
		this.circulation=circulation;
	}

  
	public String toString(){
	return "书号："+getBookId()+"\n书名："+getBookName()+"\n价格："+getBookPrice()+"\n作者："+author+"\n发行量："+circulation;
	}

	public static void main(String[] args){
		TeachingMaterial tm = new TeachingMaterial();
		tm.setBookId("CH596601");
		tm.setBookName("中华文化史");
		tm.setBookPrice(99.69f);
		tm.setAuthor("大中国");
		tm.setCirculation(100.56f);
	    System.out.println(tm.toString());
	}
}