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Initial checkin of blitz 2.0 fcs - no installer yet.
author Dan Creswell <dan.creswell@gmail.com>
date Sat, 21 Mar 2009 11:00:06 +0000
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1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
2 <html>
3 <head>
4 <title>Blitz HelloWorld Example</title>
5 <link rel="stylesheet" type="text/css" href="ssl.css" />
6 </head>
7 <body>
8 <h1>Blitz HelloWorld Example</h1>
9
10 <h2>Introduction</h2>
11
12 <p>This example provides a simple demonstration of how to use a JavaSpace (it is not Blitz specific).
13 </p>
14
15 <h2>Compiling</h2>
16
17 The example consists of four classes:
18
19 <ol>
20 <li><a href="../examples/helloworld/Lookup.java">Lookup</a> which handles service lookup.</li>
21 <li><a href="../examples/helloworld/Writer.java">Writer</a> which generates Entry's.</li>
22 <li><a href="../examples/helloworld/Taker.java">Taker</a> which takes Entry's.</li>
23 <li><a href="../examples/helloworld/TestEntry.java">TestEntry</a> which is the Entry class.</li>
24 </ol>
25
26 In order to compile these classes you will require the following <code>.jar</code>'s:
27
28 <ul>
29 <li><code>jsk-lib.jar, jsk-platform.jar from the JINI 2.x distribution.</li>
30 </ul>
31
32 Assuming that your JINI 2.1 distribution is in <code>/jini2_1</code> and your Blitz distribution is in <code>/blitz</code>, you can compile the example as follows:
33
34 <pre>
35 cd /blitz/examples/helloworld
36
37 javac -classpath /jini2_1/lib/jsk-lib.jar:/jini2_1/lib/jsk-platform.jar *.java
38 </pre>
39
40 <h2>Running</h2>
41
42 <p>Before starting the example, ensure that you have a Blitz instance running in a public lookup group - see the <a href="install_guide.html">Installation Guide</a>. This is necessary because the <code>Lookup</code> class does a single lookup and discover step - it does not register with discovered lookup services. Thus, if a Blitz instance isn't registered beforehand, it will not be found (I'll fix this in a future release!).</p>
43
44 <p>We are now ready to run the example. First, we'll start the taker - open a new terminal window and then:
45 </p>
46
47 <pre>
48 cd /blitz
49
50 java -Djava.security.policy=config/policy.all -classpath /jini2_1/lib/jsk-lib.jar:/jini2_1/lib/jsk-platform.jar:/blitz/examples/ helloworld.Taker
51 </pre>
52
53 Now we'll run the Writer - open a new terminal window and then:
54
55 <pre>
56 cd /blitz
57
58 java -Djava.security.policy=config/policy.all -classpath /jini2_1/lib/jsk-lib.jar:/jini2_1/lib/jsk-platform.jar:/blitz/examples/ helloworld.Writer
59 </pre>
60
61 <p>The Taker will exit automatically when it hasn't taken an Entry in the last 60 seconds.</p>
62
63 <h2>More Material</h2>
64
65 <p>For more examples see:</p>
66
67 <ol>
68 <li><a href="http://www.incax.com/examples.htm#jsip">JavaSpaces in Practice Examples</a></li>
69 <li><a href="https://bodega.dev.java.net/">Bodega Project</a></li>
70 </ol>
71
72 <p>For JavaSpaces resources see <a href="http://www.dancres.org/cottage/javaspaces.html">here</a></p>
73
74 <p><div align="center"><a href="../index.html">Back to Documentation</a></div></p>
75 </body>
76 </html>