廖宏 — Mon, 20 Aug 2012 15:09:00 GMT

single responsibility principle单一职责原则
open close principle开闭原�?br />liskov substitution principle里氏替换原则
Low of Demete�q�米�Ҏ(gu��)��?br />interface segregation principle接口隔离原则
dependence inversion principle依赖倒置原则

SOLID

开闭原则：(x��)

public interface IBook{
public String getName();
public int getPrice();
public String getAuthor();

}
===================================================
��说书籍的源代码如下�Q?br />public class NovelBook implements IBook{
private String name;

private int price;

private String author;

public NovelBook(String _name,int _price,String _author){

this.name=_name;
this.price=_price;
this.author=_author;
}

public String getAuthor(){
return this.author;}

public String getName(){
return this.name;}

public int getPrice(){
return this.price;}
}

}
========================================================

销售书�c�：(x��)

public class BookStore{
private final static ArrayList bookList= new ArrayList();

static{
bookList.add(new NovelBook("天龙八部1",3200,"金庸"))�Q?br />bookList.add(new NovelBook("天龙八部2",3200,"金庸"))�Q?br />bookList.add(new NovelBook("天龙八部3",3200,"金庸"))�Q?br />bookList.add(new NovelBook("天龙八部4",3200,"金庸"))�Q?/p>

}

public static void main(Sting() args){
   NumberFormat formatter=NumberFormat2.getCurrencyInstance();
   formatter.setMaximunFractionDigits(2);
    System.out.println("--------------书店买出�ȝ��书籍如下")�Q?br />   for(IBook book:bookList){

book.getName();
book.getAuthor();
book.getPrice();
}

}

廖宏 2012-08-20 23:09 发表评论

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