• 利用继承和组合实现软件复用


    利用继承实现软件复用

     1 class Animal
     2 {
     3     private String type;
     4     public Animal(String type){
     5         this.type = type;
     6     }
     7     public void beat(){
     8         System.out.println(this.getType()+"心脏在不停跳动。。。");
     9     }
    10     public void breath(){
    11         beat();
    12         System.out.println(this.getType()+"呼吸中。。。");
    13     }
    14     public String getType(){
    15         return this.type;
    16     }
    17 }
    18 class Bird extends Animal
    19 {        
    20     public Bird(String type){
    21         super(type);
    22     }
    23     public void fly(){
    24         System.out.println(this.getType()+"在天空自由自在的飞翔");
    25     }
    26 }
    27 class Wolf extends Animal
    28 {        
    29     public Wolf(String type){
    30         super(type);
    31     }
    32     public void run(){
    33         System.out.println(this.getType()+"在天空自由自在的飞翔");
    34     }
    35 }
    36 public class AnimalTest 
    37 {
    38     public static void main(String[] args)
    39     {
    40         Bird b = new Bird("鸟");
    41         b.breath();
    42         Wolf c = new Wolf("狼");
    43         c.breath();
    44     }
    45 }

    利用组合实现软件复用

     2 class Animal    //该类里的方法或Filed应是复用对象共同拥有的
     3 {
     4     private String type;
     5     public Animal(String type){
     6         this.type = type;
     7     }
     8     public void beat(){
     9         System.out.println(this.getType()+"心脏在不停跳动。。。");
    10     }
    11     public void breath(){
    12         beat();
    13         System.out.println(this.getType()+"呼吸中。。。");
    14     }
    15     public String getType(){
    16         return this.type;
    17     }
    18 }
    19 class Bird
    20 {
    21     private Animal a;        
    22     public Bird(Animal a){
    23         this.a = a;        //this.a = a = a1 = Animal@1db9742
    24 }
    26     public void breath(){
    27         a.breath();        //a1.bteath();
    28     }
    29     public void fly(){
    30         System.out.println((this.a).getType()+"在天空自由自在的飞翔");
    31     }
    32 }
    33 class  Wolf
    34 {
    35     private Animal a;
    36     public Wolf(Animal a){
    37         this.a = a;        //this.a = a = a2 = Animal@106d69c
    38     }
    39     public void breath(){
    40         a.breath();
    41     }
    42     public void run(){
    43         System.out.println((this.a).getType()+"在陆地上自由奔跑");
    44     }
    46 }
    47 public class CompositeTest
    48 {
    49     public static void main(String[] args)
    50     {
    51         Animal a1 = new Animal("鸟");
    52         Bird b = new Bird(a1);
    53         b.breath();
    54         b.fly();
    55         Animal a2 = new Animal("狼");
    56         Wolf c = new Wolf(a2);
    57         c.breath();
    58         c.run();
    59     }    
    60 }
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  • 原文地址:https://www.cnblogs.com/manliu/p/3986751.html
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