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JamesZBLJamesZBL
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增加创建者模式
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‎builder/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!--
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MIT License
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Copyright (c) 2017 James
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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-->
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>java_design_patterns</artifactId>
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<groupId>me.zbl</groupId>
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<version>1.11.9-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>builder</artifactId>
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</project>

‎builder/src/main/java/me/zbl/builder/Application.java‎

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/**
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* MIT License
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* <p>
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* Copyright (c) 2017 James
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* <p>
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* <p>
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* <p>
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package me.zbl.builder;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* 创建者模式
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*/
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public class Application {
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private static final Logger LOGGER = LoggerFactory.getLogger(Application.class);
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public static void main(String[] args) {
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Person personWang = new Person.Builder().name("小王").age(25).nationality(Nationality.CHINA).skinColor(SkinColor.YELLOW).build();
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Person personZhang = new Person.Builder().name("小张").age(28).nationality(Nationality.USA).skinColor(SkinColor.WHITE).build();
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Person personLiu = new Person.Builder().name("老王").age(48).nationality(Nationality.JAPAN).skinColor(SkinColor.YELLOW).build();
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LOGGER.info(personWang.toString());
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LOGGER.info(personZhang.toString());
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LOGGER.info(personLiu.toString());
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}
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}

‎builder/src/main/java/me/zbl/builder/Nationality.java‎

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/**
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* MIT License
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* <p>
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* Copyright (c) 2017 James
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* <p>
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* <p>
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* <p>
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package me.zbl.builder;
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/**
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* 国籍
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*/
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public enum Nationality {
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CHINA("中国"), RUSSIA("俄罗斯"), USA("美国"), JAPAN("日本"), UK("英国");
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private String name;
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Nationality(String name) {
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this.name = name;
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}
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@Override
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public String toString() {
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return name;
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}
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}

‎builder/src/main/java/me/zbl/builder/Person.java‎

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/**
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* MIT License
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* <p>
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* Copyright (c) 2017 James
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* <p>
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* <p>
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* <p>
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package me.zbl.builder;
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/**
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* 人
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*/
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public final class Person {
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private final String name;
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private final Integer age;
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private final Nationality nationality;
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public String getName() {
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return name;
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}
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public Integer getAge() {
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return age;
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}
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public Nationality getNationality() {
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return nationality;
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}
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public SkinColor getSkinColor() {
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return skinColor;
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}
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private final SkinColor skinColor;
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public Person(Builder builder) {
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this.name = builder.name;
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this.age = builder.age;
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this.skinColor = builder.skinColor;
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this.nationality = builder.nationality;
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}
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@Override
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public String toString() {
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StringBuilder sb = new StringBuilder();
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sb.append(name);
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if (null != nationality) {
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sb.append(" 是来自 " + nationality.toString() + " 的");
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}
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if (null != age) {
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sb.append(" " + age + "岁的");
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}
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if (null != skinColor) {
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sb.append(" 有着" + skinColor + "皮肤的");
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}
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sb.append("一个人");
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return sb.toString();
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}
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/**
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* 创建者
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*/
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public static class Builder {
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private String name;
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private Integer age;
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private Nationality nationality;
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private SkinColor skinColor;
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public Builder age(Integer age) {
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this.age = age;
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return this;
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}
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public Builder name(String name) {
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if (null == name) {
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throw new IllegalArgumentException("人必须有名字!");
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}
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this.name = name;
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return this;
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}
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public Builder nationality(Nationality nationality) {
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this.nationality = nationality;
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return this;
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}
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public Builder skinColor(SkinColor skinColor) {
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this.skinColor = skinColor;
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return this;
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}
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public Person build() {
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return new Person(this);
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}
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}
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}

‎builder/src/main/java/me/zbl/builder/SkinColor.java‎

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/**
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* MIT License
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* <p>
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* Copyright (c) 2017 James
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* <p>
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10+
* copies of the Software, and to permit persons to whom the Software is
11+
* furnished to do so, subject to the following conditions:
12+
* <p>
13+
* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* <p>
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17+
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18+
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19+
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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package me.zbl.builder;
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/**
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* 肤色
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*/
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public enum SkinColor {
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YELLOW("黄色"), BLACK("黑色"), WHITE("白色");
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private String color;
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SkinColor(String color) {
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this.color = color;
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}
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@Override
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public String toString() {
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return color;
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}
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}

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