Java fluent风格（转载）

转载：java Fluent风格

一.我们先写一个通常的，即不使用fluent风格

1.实体类

 package com.xbq.demo.stu;

 /**
  * @ClassName: Student
  * @Description: TODO(学生实体类)
  * @author xbq
  * @date 2017-3-26 下午9:54:00
  */
 public class Student {

     private String name;
     private String address;

     public String getName() {
         return name;
     }
     public void setName(String name) {
         this.name = name;
     }
     public String getAddress() {
         return address;
     }
     public void setAddress(String address) {
         this.address = address;
     }

     @Override
     public String toString() {
         return "Student [name=" + name + ", address=" + address + "]";
     }
 }

2.测试类

 package com.xbq.demo.stu;

 /**
  * @ClassName: Test
  * @Description: TODO(测试学生实体，非 fluent风格)
  * @author xbq
  * @date 2017-3-26 下午9:55:34
  */
 public class Test {

     public static void main(String[] args) {
         Student student = new Student();
         student.setName("张三");
         student.setAddress("广东深圳");
         System.out.println(student);
     }
 }

二.再写一个使用fluent风格的

1.实体类

 package com.xbq.demo;

 /**
  * @ClassName: Student
  * @Description: TODO(学生实体类)
  * @author xbq
  * @date 2017-3-26 下午7:56:20
  */
 public class Student {

     private String name;
     private String address;

     // 设置name的值，并且返回实体
     public Student setName(String name){
         this.name = name;
         return this;
     }

     // 设置address的值，并且返回实体
     public Student setAddress(String address){
         this.address = address;
         return this;
     }

     public String getName() {
         return name;
     }
     public String getAddress() {
         return address;
     }

     // 返回学生实体，可以做成单例
     public static Student build(){
         return new Student();
     }

     @Override
     public String toString() {
         return "Student [name=" + name + ", address=" + address + "]";
     }
 }

2.测试类

 package com.xbq.demo;

 /**
  * @ClassName: Test
  * @Description: TODO(测试学生实体， fluent风格)
  * @author xbq
  * @date 2017-3-26 下午9:59:22
  */
 public class Test {

     public static void main(String[] args) {
         Student student = Student.build().setName("李四").setAddress("广东广州");
         System.out.println(student.getName());
     }
 }