Question

这是我的代码：

import java.util.Arrays;

 public class BookClasss {
 private String name;
 public AuthorClass[]  author ; 
 private double price ; 
 private int qty =0;

public BookClasss(String names, AuthorClass[] authors, double price2,
    int qtyes)
{

  this.name = names;

  this.author = authors;

  this.price = price2;

 this.qty = qtyes;
}


public void SetBookDetails (String names, AuthorClass[] authors,double price2 , int qtyes)
{
    this.name = names;
    this.author = authors;
    this.price = price2;
    this.qty = qtyes;
}


 public String Getbookname()
{
   return name;
}


public double getprice()
{
    return price;
}

public void setprice (double prices)
{
   price = prices;
}

public void setQty (int qtnties)
{
   qty = qtnties;
}

public int getQty ()
{
    return qty;
}

 public void GetAll ()
 {
    for (int i=0; i<author.length;i++)
     {
          System.out.println("Book name : "+name+", Authors :   "+Arrays.asList(author[i].ToAll())+" , Price : "+price+"");
     }

  }

}

这是主要方法：

public class TestBook 
{
    public static void main(String[] args) 
   {

      AuthorClass[] authors = new AuthorClass[2];
      authors[0] = new AuthorClass( "John" , "John@yahoo.com" , 'M');
      authors[1] = new AuthorClass( "Sam" , "Sam@yahoo.com" , 'M');
      BookClasss book = new BookClasss("Java OOP",authors, 200.5, 20);
      book.GetAll();

   }

}

输出为：

  Book name : Java OOP, Authors : [Author Name=John , Mail = John@yahoo.com] , Price : 120.2
  Book name : Java OOP, Authors : [Author Name=Sam , Mail = Sam@yahoo.com] , Price : 120.2

我使用forloop获取所有作者数组结果，但我想打印结果如：

Book name : Java OOP, Authors : [Author Name=John , Mail = John@yahoo.com] ,  [Author Name=Sam , Mail = Sam@yahoo.com] ,  Price : 120.2

在一个结果中没有重复书名和价格..我怎么能这样做？谁能帮帮我???

Answer 1

public void GetAll ()
 {
    System.out.println("Book name : "+name+", Authors :   ");
    for (int i=0; i<author.length;i++)
     {
          System.out.print(Arrays.asList(author[i].ToAll())+" ,"); 
     }
     System.out.println("Price : "+price+"");
  }

如何在一条路径上取得成果？

1 个答案: