examples/JavaExamples.st
author Stefan Vogel <sv@exept.de>
Thu, 11 Apr 2019 18:36:26 +0200
branchcvs_MAIN
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parent 3412 df11bb428463
child 3508 622620308fee
permissions -rw-r--r--
#REFACTORING by stefan class: JavaVM class changed: #loadClassesIn:matching: use \"asFilename pathName\" instead of \"asFilename asAbsoluteFilename pathName\" ist is equivalent!
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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 COPYRIGHT (c) 1996-2015 by Claus Gittinger
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 New code and modifications done at SWING Research Group [1]:
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 COPYRIGHT (c) 2010-2015 by Jan Vrany, Jan Kurs and Marcel Hlopko
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                            SWING Research Group, Czech Technical University in Prague
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 This software is furnished under a license and may be used
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 only in accordance with the terms of that license and with the
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 inclusion of the above copyright notice.   This software may not
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 be provided or otherwise made available to, or used by, any
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 other person.  No title to or ownership of the software is
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 hereby transferred.
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 [1] Code written at SWING Research Group contains a signature
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     of one of the above copright owners. For exact set of such code,
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     see the differences between this version and version stx:libjava
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     as of 1.9.2010
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"
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"{ Package: 'stx:libjava/examples' }"
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Object subclass:#JavaExamples
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	instanceVariableNames:''
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	classVariableNames:''
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	poolDictionaries:''
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	category:'Languages-Java-Examples'
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!
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!JavaExamples class methodsFor:'documentation'!
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copyright
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"
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 COPYRIGHT (c) 1996-2015 by Claus Gittinger
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 New code and modifications done at SWING Research Group [1]:
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 COPYRIGHT (c) 2010-2015 by Jan Vrany, Jan Kurs and Marcel Hlopko
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                            SWING Research Group, Czech Technical University in Prague
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 This software is furnished under a license and may be used
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 only in accordance with the terms of that license and with the
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 inclusion of the above copyright notice.   This software may not
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 be provided or otherwise made available to, or used by, any
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 other person.  No title to or ownership of the software is
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 hereby transferred.
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 [1] Code written at SWING Research Group contains a signature
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     of one of the above copright owners. For exact set of such code,
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     see the differences between this version and version stx:libjava
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     as of 1.9.2010
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"
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! !
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!JavaExamples class methodsFor:'examples'!
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example_1
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    "A CD .xml parsing example. The handler prints each CD it parses
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     from given XML file. Demonstrates:
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      - proxy creation
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      - exception handling
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    cd.xml may look like:
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    <?xml version='1.0' encoding='ISO-8859-1'?>
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    <catalog>
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        <cd>
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            <title>Empire Burlesque</title>
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            <artist>Bob Dylan</artist>
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            <country>USA</country>
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            <company>Columbia</company>
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            <price>10.90</price>
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            <year>1985</year>
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        </cd>
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    </catalog>
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    "
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    | file factory parser |
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    file := (Smalltalk packageDirectoryForPackageId: self package) asFilename
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                / 'data' / 'cd.xml'.
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    factory := JAVA javax xml parsers SAXParserFactory newInstance.
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    parser := factory newSAXParser getXMLReader.
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    parser setContentHandler: JavaExamples::CDDatabaseHandler1 new.
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    [
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        parser parse: file pathName
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    ] on: JAVA java io IOException do:[:ioe|
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        Transcript showCR: 'I/O error: ', ioe getMessage.
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        ioe printStackTrace
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    ] on: UserNotification do:[:un|
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        Transcript showCR: un messageText.
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        un proceed.
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    ]
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    "Created: / 13-05-2012 / 18:27:13 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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example_2
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    "A CD .xml parsing example. The parser raises a UserNotification
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     whenever it parses a CD. The notification is then handled and printed. 
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     Demonstrates:
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      - proxy creation
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      - exception handling
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    cd.xml may look like:
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    <?xml version='1.0' encoding='ISO-8859-1'?>
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    <catalog>
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        <cd>
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            <title>Empire Burlesque</title>
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            <artist>Bob Dylan</artist>
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            <country>USA</country>
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            <company>Columbia</company>
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            <price>10.90</price>
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            <year>1985</year>
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        </cd>
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    </catalog>
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    "
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    | file factory parser |
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    file := (Smalltalk packageDirectoryForPackageId: self package) asFilename
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                / 'data' / 'cd.xml'.
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    factory := JAVA javax xml parsers SAXParserFactory newInstance.
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    parser := factory newSAXParser getXMLReader.
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    parser setContentHandler: JavaExamples::CDDatabaseHandler2 new.
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    [
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        parser parse: file pathName
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    ] on: JAVA java io IOException do:[:ioe|
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        Transcript showCR: 'I/O error: ', ioe getMessage.
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        ioe printStackTrace
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    ] on: UserNotification do:[:un|
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        Transcript showCR: un messageText.
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        un proceed.
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    ]
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    "Created: / 20-08-2012 / 17:28:38 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!JavaExamples class methodsFor:'documentation'!
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version_CVS
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    ^ '$Header: /cvs/stx/stx/libjava/examples/JavaExamples.st,v 1.5 2015-03-20 12:08:02 vrany Exp $'
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!
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version_HG
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    ^ '$Changeset: <not expanded> $'
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!
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version_SVN
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    ^ '$Id: JavaExamples.st,v 1.5 2015-03-20 12:08:02 vrany Exp $'
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! !
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