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Add an example about Command Pattern.
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‎BehavioralDesignPattern/CommandPattern/Java/CommandPatternDemo/CommandPatternDemo.iml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<module type="JAVA_MODULE" version="4">
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<component name="NewModuleRootManager" inherit-compiler-output="true">
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
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</content>
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<orderEntry type="inheritedJdk" />
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<orderEntry type="sourceFolder" forTests="false" />
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</component>
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</module>

‎BehavioralDesignPattern/CommandPattern/Java/CommandPatternDemo/out/production/CommandPatternDemo/Broker.class‎

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‎BehavioralDesignPattern/CommandPattern/Java/CommandPatternDemo/out/production/CommandPatternDemo/BuyStock.class‎

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‎BehavioralDesignPattern/CommandPattern/Java/CommandPatternDemo/out/production/CommandPatternDemo/Main.class‎

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‎BehavioralDesignPattern/CommandPattern/Java/CommandPatternDemo/out/production/CommandPatternDemo/Order.class‎

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‎BehavioralDesignPattern/CommandPattern/Java/CommandPatternDemo/out/production/CommandPatternDemo/SellStock.class‎

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‎BehavioralDesignPattern/CommandPattern/Java/CommandPatternDemo/out/production/CommandPatternDemo/Stock.class‎

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‎BehavioralDesignPattern/CommandPattern/Java/CommandPatternDemo/src/Broker.java‎

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import java.util.ArrayList;
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import java.util.List;
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public class Broker
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{
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private List<Order> orderList = new ArrayList<Order>();
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public void takeOrder(Order order)
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{
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orderList.add(order);
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}
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public void placeOrders()
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{
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for (Order order : orderList)
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{
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order.execute();
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}
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orderList.clear();
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}
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}

‎BehavioralDesignPattern/CommandPattern/Java/CommandPatternDemo/src/BuyStock.java‎

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public class BuyStock implements Order
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{
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private Stock ibmStock;
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public BuyStock(Stock ibmStock)
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{
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this.ibmStock = ibmStock;
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}
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public void execute()
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{
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ibmStock.buy();
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}
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}

‎BehavioralDesignPattern/CommandPattern/Java/CommandPatternDemo/src/Main.java‎

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public class Main
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{
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public static void main(String[] args)
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{
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Stock abcStock = new Stock();
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BuyStock buyStockOrder = new BuyStock(abcStock);
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SellStock sellStockOrder = new SellStock(abcStock);
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Broker broker = new Broker();
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broker.takeOrder(buyStockOrder);
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broker.takeOrder(sellStockOrder);
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broker.placeOrders();
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}
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}

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