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JamesZBLJamesZBL
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完成 状态模式 Sample
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‎state/src/main/java/me/zbl/state/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.state;
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/**
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* State
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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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Coder coder = new Coder();
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coder.prepare();
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coder.timePass();
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coder.prepare();
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coder.timePass();
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coder.prepare();
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}
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}

‎state/src/main/java/me/zbl/state/Coder.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.state;
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/**
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* 程序员
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*/
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public class Coder {
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private State state;
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public Coder() {
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this.state = new IdleState(this);
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}
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private void changeStateTo(State newState) {
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this.state = newState;
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state.onEnterState();
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}
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public void timePass() {
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if (state.getClass().equals(ImpatientState.class)) {
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changeStateTo(new IdleState(this));
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} else {
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changeStateTo(new ImpatientState(this));
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}
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}
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public void prepare() {
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state.onPreparing();
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}
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}

‎state/src/main/java/me/zbl/state/IdleState.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.state;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* 清闲的状态
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*/
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public class IdleState implements State {
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private static final Logger LOGGER = LoggerFactory.getLogger(IdleState.class);
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private Coder coder;
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public IdleState(Coder coder) {
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this.coder = coder;
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}
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@Override
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public void onPreparing() {
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LOGGER.info("{}正努力使自己变得平静", coder);
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}
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@Override
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public void onEnterState() {
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LOGGER.info("{}正悠闲的听着歌", coder);
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}
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}

‎state/src/main/java/me/zbl/state/ImpatientState.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
8+
* 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
11+
* 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.state;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* 焦躁的状态
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*/
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public class ImpatientState implements State {
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private static final Logger LOGGER = LoggerFactory.getLogger(ImpatientState.class);
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private Coder coder;
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public ImpatientState(Coder coder) {
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this.coder = coder;
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}
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@Override
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public void onPreparing() {
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LOGGER.info("{}面对一堆 bug，开始逐渐焦躁起来", coder);
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}
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@Override
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public void onEnterState() {
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LOGGER.info("{}已经被 bug 搞的进入了极度狂躁的状态", coder);
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}
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}

‎state/src/main/java/me/zbl/state/State.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>
6+
* Permission is hereby granted, free of charge, to any person obtaining a copy
7+
* of this software and associated documentation files (the "Software"), to deal
8+
* in the Software without restriction, including without limitation the rights
9+
* 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
14+
* copies or substantial portions of the Software.
15+
* <p>
16+
* 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
20+
* 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.state;
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/**
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* 状态接口
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*/
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public interface State {
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void onPreparing();
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void onEnterState();
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}

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