carfield.com.hkCreator.java2004-03-24T16:00:00Z2004-03-24T16:00:00Z<br/><TEXTAREA name="code" class="java" rows="16" cols="100">package examples.templateMethod.java;
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This file is part of the design patterns project at UBC
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is ca.ubc.cs.spl.pattern.
*
* Contributor(s):
*/
/**
* Defines the interface for creators. In this example, it acts as the <i>
* AbstractClass</i>. The template method is <code>decorate(String)</code>,
* which uses all other methods defined in this abstract class.
*
* @author Jan Hannemann
* @author Gregor Kiczales
* @version 1.0, 05/13/02
*
* @see SimpleCreator
* @see FancyCreator
*/
public abstract class Creator {
/**
* Decorates a string. This is the template method.
*
* @param s the string to decorate
* @returns the decorated string
*/
public String decorate(String s) {
s = prepare(s);
s = filter(s);
s = finalize(s);
return s;
}
/**
* Prepares a string for decoration.
*
* @param s the string to filter
* @returns the prepared string
*/
public abstract String prepare (String s);
/**
* Filters a string.
*
* @param s the string to filter
* @returns the filtered string
*/
public abstract String filter (String s);
/**
* Finalizes a string. This is the last step in the template method.
*
* @param s the string to finalize
* @returns the finalized string
*/
public abstract String finalize (String s);
} </TEXTAREA><br><br/><script type="text/javascript"><!--google_ad_client = "pub-9426659565807829";google_ad_slot = "9359905831";google_ad_width = 728;google_ad_height = 15;//--></script><script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>2004-03-24T16:00:00ZFancyCreator.java2004-03-24T16:00:00Z2004-03-24T16:00:00Z<br/><TEXTAREA name="code" class="java" rows="16" cols="100">package examples.templateMethod.java;
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This file is part of the design patterns project at UBC
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is ca.ubc.cs.spl.pattern.
*
* Contributor(s):
*/
/**
* Implements a <i>ConcreteClass</i> that decorates strings by turnung all
* characters into lowercase and then capitalizing the consonants. It also
* adds an explanation at the end.
*
* @author Jan Hannemann
* @author Gregor Kiczales
* @version 1.0, 05/13/02
*
* @see Creator
* @see SimpleCreator
*/
public class FancyCreator extends Creator {
/**
* Prepares a string for decoration. Turns the string into lowercase.
*
* @param s the string to filter
* @returns the prepared string
*/
public String prepare (String s) {
return s.toLowerCase();
}
/**
* Filters a string. Capitalizes all consonants.
*
* @param s the string to filter
* @returns the filtered string
*/
public String filter (String s) {
s = s.replace('a', 'A');
s = s.replace('e', 'E');
s = s.replace('i', 'I');
s = s.replace('o', 'O');
s = s.replace('u', 'U');
return s;
}
/**
* Finalizes a string by adding an explanation to it.
*
* @param s the string to finalize
* @returns the finalized string
*/
public String finalize (String s) {
return (s+".\n(all consonants capitalized)");
}
}</TEXTAREA><br><br/><script type="text/javascript"><!--google_ad_client = "pub-9426659565807829";google_ad_slot = "9359905831";google_ad_width = 728;google_ad_height = 15;//--></script><script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>2004-03-24T16:00:00ZMain.java2004-03-24T16:00:00Z2004-03-24T16:00:00Z<br/><TEXTAREA name="code" class="java" rows="16" cols="100">package examples.templateMethod.java;
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This file is part of the design patterns project at UBC
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is ca.ubc.cs.spl.pattern.
*
* Contributor(s):
*/
/**
* Implements the driver for the Template Method design pattern example.<p>
*
* Intent: <i>Define the skeleton of an algorithm in an operation, deferring
* some steps to subclasses. Template Method lets subclasses redefine certain
* steps of an algorithm without changing the algorithm's structure</i><p>
*
* Participatng objects are <code>SimpleCreator</code> and
* <code>FancyCreator</code> as <i>ConcreteClass</i>es. The
* <i>AbstractClass</i> is <code>Creator</code>.
* <p>
*
* In this example, the template method <code>decorate(String)</code> calls
* modifies a string in three steps and returns the result. The SimpleCreator
* does not change the string much, but adds a period at the end of it. The
* FancyCreator turns the string to lowercase, then capitalizes all
* consonants and adds an explanantion to it.
*
* <p><i>This is the Java version.</i><p>
*
* Note that <i>AbstractClass</i> does in fact have to be abstract, to
* make it possible to define a default implementation for the template
* method.
*
* @author Jan Hannemann
* @author Gregor Kiczales
* @version 1.0, 05/13/02
*
* @see Creator
* @see SimpleCreator
* @see FancyCreator
*/
public class Main {
/**
* Implements the driver for the Template Method design pattern example.<p>
*
* In this example, the template method <code>decorate(String)</code> calls
* modifies a string in three steps and returns the result. The SimpleCreator
* does not change the string much, but adds a period at the end of it. The
* FancyCreator turns the string to lowercase, then capitalizes all
* consonants and adds an explanantion to it.
*
* @param args the command line parameters, unused
*/
public static void main(String[] args) {
String original = "This Is The Original String To Be Processed";
Creator c1 = new SimpleCreator();
Creator c2 = new FancyCreator();
System.out.println("<Original>");
System.out.println(original);
System.out.println("<SimpleCreator>");
System.out.println(c1.decorate(original));
System.out.println("<FancyCreator>");
System.out.println(c2.decorate(original));
}
}</TEXTAREA><br><br/><script type="text/javascript"><!--google_ad_client = "pub-9426659565807829";google_ad_slot = "9359905831";google_ad_width = 728;google_ad_height = 15;//--></script><script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>2004-03-24T16:00:00ZSimpleCreator.java2004-03-24T16:00:00Z2004-03-24T16:00:00Z<br/><TEXTAREA name="code" class="java" rows="16" cols="100">package examples.templateMethod.java;
/* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This file is part of the design patterns project at UBC
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is ca.ubc.cs.spl.pattern.
*
* Contributor(s):
*/
/**
* Implements a <i>ConcreteClass</i> that decorates strings by adding a
* period at the end of them.
*
* @author Jan Hannemann
* @author Gregor Kiczales
* @version 1.0, 05/13/02
*
* @see Creator
* @see FancyCreator
*/
public class SimpleCreator extends Creator {
/**
* Prepares a string for decoration. Does nothing.
*
* @param s the string to filter
* @returns the passed string
*/
public String prepare (String s) {
return s;
}
/**
* Filters a string. Does nothing.
*
* @param s the string to filter
* @returns the passed string
*/
public String filter (String s) {
return s;
}
/**
* Finalizes a string by adding a period to it.
*
* @param s the string to finalize
* @returns the finalized string
*/
public String finalize (String s) {
return s+".";
}
}</TEXTAREA><br><br/><script type="text/javascript"><!--google_ad_client = "pub-9426659565807829";google_ad_slot = "9359905831";google_ad_width = 728;google_ad_height = 15;//--></script><script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>2004-03-24T16:00:00Zfiles.lst2004-03-24T16:00:00Z2004-03-24T16:00:00Z<br/><br/><script type="text/javascript"><!--google_ad_client = "pub-9426659565807829";google_ad_slot = "9359905831";google_ad_width = 728;google_ad_height = 15;//--></script><script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js"></script>2004-03-24T16:00:00Z