java中用builder模式实现实体类的创建

package com.panther.builder;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
* 在设计模式中对Builder模式的定义是用于构建复杂对象的一种模式，
* 所构建的对象往往需要多步初始化或赋值才能完成。
* 那么，在实际的开发过程中，我们哪些地方适合用到Builder模式呢？
* 其中使用Builder模式来替代多参数构造函数是一个比较好的实践法则。
* Created by panther.dongdong on 2015/11/16.
*/
public class Student {
private static final Logger LOGGER = LoggerFactory.getLogger(Student.class.getName());

private int id;
private int age;
private String name;
private String sex;
private String love;
private String phone;

public int getId() {
return id;
}

public void setId(int id) {
this.id = id;
}

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public String getSex() {
return sex;
}

public void setSex(String sex) {
this.sex = sex;
}

public String getLove() {
return love;
}

public void setLove(String love) {
this.love = love;
}

public String getPhone() {
return phone;
}

public void setPhone(String phone) {
this.phone = phone;
}

public static Builder create() {
return new Builder();
}

public Student(Builder builder) {
this.id = builder.id;
this.age = builder.age;
this.name = builder.name;
this.sex = builder.sex;
this.love = builder.love;
this.phone = builder.phone;
}

public static class Builder {

private int id = 0;
private int age = 0;
private String name = null;
private String sex = null;
private String love = null;
private String phone = null;

//构建的步骤
public Builder addId(int id) {
this.id = id;
return this;
}

public Builder addAge(int age) {
this.age = age;
return this;
}

public Builder addName(String name) {
this.name = name;
return this;
}

public Builder addSex(String sex) {
this.sex = sex;
return this;
}

public Builder addLove(String love) {
this.love = love;
return this;
}

public Builder addPhone(String phone) {
this.phone = phone;
return this;
}

public Student build() {
return new Student(this);
}
}

@Override
public String toString() {
return "Student{" +
"id=" + id +
", age=" + age +
", name='" + name + '\'' +
", sex='" + sex + '\'' +
", love='" + love + '\'' +
", phone='" + phone + '\'' +
'}';
}

/**
* 测试生成Student
*
* @param args
*/
public static void main(String[] args) {
Student student = Student.create().addAge(18).addName("panther").addLove("play")
.addPhone("110").addSex("男").build();
LOGGER.info("{}", student.toString());
}
}