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Java > Open Source Codes > org > apache > hivemind > examples > CalculatorMain


1 // Copyright 2004, 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.hivemind.examples;
16
17 import org.apache.hivemind.Registry;
18
19 /**
20  * Runs through the methods of the {@link org.apache.hivemind.examples.Calculator} with
21  * a pair of argument values parsed from the command line.
22  *
23  * @author Howard Lewis Ship
24  */
25 public class CalculatorMain
26 {
27     public static void main(String JavaDoc[] args)
28     {
29         double arg0 = Double.parseDouble(args[0]);
30         double arg1 = Double.parseDouble(args[1]);
31
32         Registry registry = ExampleUtils.buildRegistry("examples.xml");
33
34         // Since we know there's exactly *one* service-point implementing Calculator,
35 // we can get it this way, and never have to know its service id.
36
37         Calculator calculator = (Calculator) registry.getService(Calculator.class);
38
39         System.out.println("Inputs: " + arg0 + " and " + arg1);
40         System.out.println("Add: " + calculator.add(arg0, arg1));
41         System.out.println("Subtract: " + calculator.subtract(arg0, arg1));
42         System.out.println("Multiply: " + calculator.multiply(arg0, arg1));
43         System.out.println("Divide: " + calculator.divide(arg0, arg1));
44         
45         registry.shutdown();
46     }
47 }
48
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