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Merge pull request JamesZBL#15 from JamesZBL/develop
完成 访问者模式
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‎README.md

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[![License MIT](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/JamesZBL/java_design_patterns/blob/master/LICENSE)
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[![Build status](https://travis-ci.org/JamesZBL/java_design_patterns.svg?branch=master)](https://travis-ci.org/JamesZBL/java_design_patterns)
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[![Gitter](https://img.shields.io/gitter/room/nwjs/nw.js.svg)](https://gitter.im/java_design_patterns/)
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## 介绍
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设计模式（Design pattern）是用于面向对象程序设计的、有效提高代码重用效率、有着明确使用场景分类的程序设计规范的总结。使用设计模式的

‎pom.xml

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<module>memento</module>
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<module>observer</module>
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<module>state</module>
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<module>strategy</module>
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<module>template-method</module>
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<module>visitor</module>
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</modules>
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<dependencies>

‎strategy/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>com.github.JamesZBL</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>strategy</artifactId>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.mockito</groupId>
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<artifactId>mockito-core</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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</project>

‎strategy/src/main/java/me/zbl/strategy/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.strategy;
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/**
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* Strategy
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*/
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public class Application {
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public static void main(String[] args) {
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BusinessMan man = new BusinessMan(new TransportationAirplane());
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man.transport();
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man.changetStrategy(new TransportationTrain());
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man.transport();
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man.changetStrategy(new TransportationVehicle());
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man.transport();
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}
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}

‎strategy/src/main/java/me/zbl/strategy/BusinessMan.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.strategy;
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/**
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* 商人
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*/
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public class BusinessMan {
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private TransportationStrategy strategy;
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public BusinessMan(TransportationStrategy strategy) {
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this.strategy = strategy;
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}
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public void changetStrategy(TransportationStrategy strategy) {
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this.strategy = strategy;
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}
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public void transport() {
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this.strategy.go();
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}
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}

‎strategy/src/main/java/me/zbl/strategy/TransportationAirplane.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.strategy;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* 乘飞机
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*/
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public class TransportationAirplane implements TransportationStrategy {
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private static final Logger LOGGER = LoggerFactory.getLogger(TransportationAirplane.class);
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@Override
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public void go() {
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LOGGER.info("乘飞机从北京去广州");
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}
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}

‎strategy/src/main/java/me/zbl/strategy/TransportationStrategy.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.strategy;
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/**
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* 交通方式策略
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*/
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@FunctionalInterface
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public interface TransportationStrategy {
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void go();
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}

‎strategy/src/main/java/me/zbl/strategy/TransportationTrain.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.strategy;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* 乘火车
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*/
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public class TransportationTrain implements TransportationStrategy {
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private static final Logger LOGGER = LoggerFactory.getLogger(TransportationTrain.class);
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@Override
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public void go() {
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LOGGER.info("乘高铁从北京去上海");
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}
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}

‎strategy/src/main/java/me/zbl/strategy/TransportationVehicle.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.strategy;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* 驾车
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*/
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public class TransportationVehicle implements TransportationStrategy {
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private static final Logger LOGGER = LoggerFactory.getLogger(TransportationVehicle.class);
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@Override
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public void go() {
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LOGGER.info("驾车从北京去天津");
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}
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}

‎template-method/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
9+
of this software and associated documentation files (the "Software"), to deal
10+
in the Software without restriction, including without limitation the rights
11+
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
12+
copies of the Software, and to permit persons to whom the Software is
13+
furnished to do so, subject to the following conditions:
14+
15+
The above copyright notice and this permission notice shall be included in all
16+
copies or substantial portions of the Software.
17+
18+
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19+
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20+
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
21+
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22+
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
23+
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>com.github.JamesZBL</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>template-method</artifactId>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.mockito</groupId>
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<artifactId>mockito-core</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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</project>

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