标签:return int Builder 模式 age BuilderTest speed public
还没有看过Builder模式的作用,看过一篇介绍Builder模式的文章,这里是关于Builder模式的思考:思考是否有比新建一个内部类更好的方法,首先想到的是
package xyz.n490808114.test; public class BuilderTest{ String name; int age; int high; int weight; int speed; public BuilderTest name(String name){ this.name = name; return this; } public BuilderTest age(int age){ this.age = age; return this; } public BuilderTest high(int high){ this.high = high; return this; } public BuilderTest weight(int weight){ this.weight = weight; return this; } public BuilderTest speed(int speed){ this.speed = speed; return this; } public void setName(String name){this.name = name;} public void setAge(int age){this.age = age;} public void setHigh(int high){this.high = high;} public void setWeight(int weight){this.weight = weight;} public void setSpeed(int speed){this.speed = speed;} public String getName(){return this.name;} public int getAge(){return this.age;} public int getHigh(){return this.high;} public int getWeight(){return this.weight;} public int getSpeed(){return this.speed;} public static void main(String[] args) { BuilderTest t = new BuilderTest().age(20).speed(50); System.out.println(t.name); System.out.println(t.age); System.out.println(t.high); System.out.println(t.weight); System.out.println(t.speed); } }
输入为
null 20 0 0 50
这样感觉跟set方法重复太多,整合一下,如下
package xyz.n490808114.test; public class BuilderTest{ String name; int age; int high; int weight; int speed; public BuilderTest setName(String name){this.name = name;return this;} public BuilderTest setAge(int age){this.age = age;return this;} public BuilderTest setHigh(int high){this.high = high;return this;} public BuilderTest setWeight(int weight){this.weight = weight;return this;} public BuilderTest setSpeed(int speed){this.speed = speed;return this;} public String getName(){return this.name;} public int getAge(){return this.age;} public int getHigh(){return this.high;} public int getWeight(){return this.weight;} public int getSpeed(){return this.speed;} public static void main(String[] args) { BuilderTest t = new BuilderTest().setAge(20).setSpeed(50); System.out.println(t.name); System.out.println(t.age); System.out.println(t.high); System.out.println(t.weight); System.out.println(t.speed); } }
这样只是精简代码,只是不知道这样的set方法能不能被架构认可,待测试
能够想到的是:
1,Builder模式用内部类的方法,可以用来修改现有代码,不改动,不新增类的方法,仅在创建时使用内部类;
2,猜测:如果不是频繁创建的话,对性能的影响不大;
3,如果不采用模式,仅使用set方法的话,代码量会多,但是代码会更清晰;
4,Builder模式使代码更易阅读。
标签:return,int,Builder,模式,age,BuilderTest,speed,public 来源: https://www.cnblogs.com/xiangzhahao/p/11157397.html
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