63 lines
2.7 KiB
Java
63 lines
2.7 KiB
Java
/*
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* The MIT License
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* Copyright © 2014-2019 Ilkka Seppälä
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*
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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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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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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
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* THE SOFTWARE.
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*/
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package com.iluwatar.separatedinterface;
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import com.iluwatar.separatedinterface.invoice.InvoiceGenerator;
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import com.iluwatar.separatedinterface.taxes.DomesticTaxCalculator;
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import com.iluwatar.separatedinterface.taxes.ForeignTaxCalculator;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* <p>The Separated Interface pattern encourages to separate the interface definition and
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* implementation in different packages. This allows the client to be completely unaware of the
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* implementation.</p>
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*
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* <p>In this class the {@link InvoiceGenerator} class is injected with different instances of
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* {@link com.iluwatar.separatedinterface.invoice.TaxCalculator} implementations located in separate
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* packages, to receive different responses for both of the implementations.</p>
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*/
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public class App {
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private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
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public static final double PRODUCT_COST = 50.0;
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/**
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* Program entry point.
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*
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* @param args command line args
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*/
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public static void main(String[] args) {
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//Create the invoice generator with product cost as 50 and foreign product tax
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var internationalProductInvoice = new InvoiceGenerator(PRODUCT_COST,
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new ForeignTaxCalculator());
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LOGGER.info("Foreign Tax applied: {}", "" + internationalProductInvoice.getAmountWithTax());
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//Create the invoice generator with product cost as 50 and domestic product tax
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var domesticProductInvoice = new InvoiceGenerator(PRODUCT_COST, new DomesticTaxCalculator());
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LOGGER.info("Domestic Tax applied: {}", "" + domesticProductInvoice.getAmountWithTax());
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}
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}
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