面向过程及面向对象的扇入及扇出

面向过程的扇入及扇出：

扇入：是指直接调用该模块的上级模块的个数。即：called by个数（在McCabe 里度量名称为Fan in）

扇出：该模块直接调用的下级模块的个数。即：calls to 个数（在McCabe 里度量名称为Fan out）

面向对象的扇入及扇出：

扇入：派生类的数量：即一个子类继承的父类个数。通俗的讲即有多个个父类产生了此子类。（在McCabe 里度量名称为Fan in）

扇出：由一个类衍生出类的数量：即一个父类产生的子类个数。（在McCabe 里度量名称为NOC）

实例代码：

父类：People.java

 1 public class People {
 2     private String name;
 3     private int age;
 4     
 5     public People(String myName,int myAge){
 6         this.name = myName;
 7         this.age = myAge;
 8     }
 9     
10     public void eat(){
11         System.out.println("I am eating");
12     }
13     
14     public void sleep(){
15         System.out.println("I am sleep");
16     }
17     
18     public void doWork(){
19         this.eat();
20         this.sleep();
21         System.out.println("I am goto work");
22     }
23     
24 }

View Code

子类1：Students.java

 1 public class Students extends People{
 2     private String mySchool;
 3 
 4     public Students(String myName, int myAge, String mySchool) {
 5         super(myName, myAge);
 6         // TODO Auto-generated constructor stub
 7         this.mySchool = mySchool;
 8     }
 9     
10     public void goSchool(){
11         this.doWork();
12         System.out.println("I am goto school");
13     }
14 }

View Code

子类2：Worker.java

 1 public class Worker extends People{
 2     private String address;
 3 
 4     public Worker(String myName, int myAge,String address) {
 5         super(myName, myAge);
 6         // TODO Auto-generated constructor stub
 7         this.address = address;
 8     }
 9     
10     public void doJob(){
11         this.doWork();
12         System.out.println("I am goto job");
13     }
14 }

View Code

主类：Famly.java

public class Famly {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Students stu = new Students("xx",15,"qinghua");
        Worker wor = new Worker("yy",35,"tonghuashun");
        
        stu.goSchool();
        wor.doWork();
    }

}