《Effective Java》builder模式创建对象

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package com.base.test;/** *  * @author ZHEN.L * @DATE 2016.04.22 *  */public class StudentDto {private String name;private int age;private String address;private StudentDto() {}public static class Build {private StudentDto s = new StudentDto();public Build name(String name) {this.s.setName(name);return this;}public Build age(int age) {this.s.setAge(age);return this;}public Build address(String address) {this.s.setAddress(address);return this;}public StudentDto build() {return s;}}public String getName() {return name;}public void setName(String name) {this.name = name;}public int getAge() {return age;}public void setAge(int age) {this.age = age;}public String getAddress() {return address;}public void setAddress(String address) {this.address = address;}}

import com.base.test.StudentDto;public class Test {<span style="white-space:pre"></span>public static void main(String[] args) {<span style="white-space:pre"></span>StudentDto s = new StudentDto.Build().name("张三").age(18).address("复兴路")<span style="white-space:pre"></span>.build();<span style="white-space:pre"></span>System.out.println(s.getName() + " : " + s.getAge() + " : "<span style="white-space:pre"></span>+ s.getAddress());<span style="white-space:pre"></span>}}

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