Add TODO.md for running Java demo projects

Java.temp1-master/MapSort/README.md

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+SORT JAVA MAP BY KEYS AND VALUES
+--------------------------------
+
+* "Key,Value" order in Java HashMap is not guaranteed.
+* Sorting a Map type class by "keys" is given by TreeMap, just TreeMap.putAll(map) will return sorted map by keys.
+* Sorting a Map by "values" needs one more step, we need to define a Comparator that compares values to each other.
+

Java.temp1-master/MapSort/src/com/hmkcode/MapSort.java

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+package com.hmkcode;
+
+
+import java.util.Map;
+import java.util.TreeMap;
+
+public class MapSort {
+
+  public static Map sortByValue(Map unsortedMap){
+  	Map sortedMap = new TreeMap(new ValueComparator(unsortedMap));
+  	sortedMap.putAll(unsortedMap);
+  	return sortedMap;
+  }
+  public static Map sortByKey(Map unsortedMap){
+  	Map sortedMap = new TreeMap();
+  	sortedMap.putAll(unsortedMap);
+  	return sortedMap;
+  }
+}

Java.temp1-master/MapSort/src/com/hmkcode/Test.java

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+package com.hmkcode;
+
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class Test {
+public static void main(String[] args){
+
+
+  	Map map = new HashMap();
+
+  	//*value Class should implements the Comparable interface
+  	//*String implements Comparable by default.
+
+  	map.put("Z", "3");
+  	map.put("D", "4");
+  	map.put("A", "1");
+  	map.put("B", "2");
+  	map.put("F", "6");
+  	map.put("E", "5");
+
+  	System.out.println("Unsorted Map: "+map);
+  	System.out.println("Sorted Map By Values: "+MapSort.sortByValue(map));
+  	System.out.println("Sorted Map By Keys: "+MapSort.sortByKey(map));
+
+  }
+}

Java.temp1-master/MapSort/src/com/hmkcode/ValueComparator.java

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+package com.hmkcode;
+
+import java.util.Comparator;
+import java.util.Map;
+
+public class ValueComparator implements Comparator {
+
+  Map map;
+
+  public ValueComparator(Map map){
+  	this.map = map;
+  }
+  public int compare(Object keyA, Object keyB){
+
+  	Comparable valueA = (Comparable) map.get(keyA);
+  	Comparable valueB = (Comparable) map.get(keyB);
+
+  	System.out.println(valueA +" - "+valueB);
+
+  	return valueA.compareTo(valueB);
+
+  }
+
+
+}

Java.temp1-master/castor-xml-object/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" output="target/classes" path="src/main/java">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="optional" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="var" path="M2_REPO/org/codehaus/castor/castor/1.2/castor-1.2.jar"/>
+	<classpathentry kind="var" path="M2_REPO/commons-logging/commons-logging/1.1.1/commons-logging-1.1.1.jar"/>
+	<classpathentry kind="var" path="M2_REPO/xerces/xercesImpl/2.8.1/xercesImpl-2.8.1.jar"/>
+	<classpathentry kind="var" path="M2_REPO/xml-apis/xml-apis/1.3.03/xml-apis-1.3.03.jar"/>
+	<classpathentry excluding="**" kind="src" output="target/test-classes" path="src/test/resources">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="test" value="true"/>
+			<attribute name="optional" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
+		<attributes>
+			<attribute name="maven.pomderived" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" path="target/generated-sources/annotations">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="ignore_optional_problems" value="true"/>
+			<attribute name="m2e-apt" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="src" output="target/test-classes" path="target/generated-test-sources/test-annotations">
+		<attributes>
+			<attribute name="optional" value="true"/>
+			<attribute name="maven.pomderived" value="true"/>
+			<attribute name="ignore_optional_problems" value="true"/>
+			<attribute name="m2e-apt" value="true"/>
+			<attribute name="test" value="true"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="output" path="target/classes"/>
+</classpath>

Java.temp1-master/castor-xml-object/article.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<article>
+	<categories xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="java:java.lang.String">Java</categories>
+	<tags xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="java:java.lang.String">Java</tags>
+	<tags xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="java:java.lang.String">Castor</tags>
+	<tags xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="java:java.lang.String">XML</tags>
+	<tags xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="java:java.lang.String">Marshalling</tags>
+	<tags xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="java:java.lang.String">Unmarshalling</tags>
+	<url>http://hmkcode.com/castor-java-object-xml</url>
+	<title>Castor - Java Object to XML &amp; XML to Object Mapping</title>
+</article>

Java.temp1-master/castor-xml-object/mapped_article.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<article title="Castor - Java Object to XML &amp; XML to Object Mapping">
+	<url>http://hmkcode.com/castor-java-object-xml</url>
+	<category>Java</category>
+	<tag>Java</tag>
+	<tag>Castor</tag>
+	<tag>XML</tag>
+	<tag>Marshalling</tag>
+	<tag>Unmarshalling</tag>
+</article>

Java.temp1-master/castor-xml-object/mapping.xml

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+<?xml version="1.0"?><!DOCTYPE mapping PUBLIC "-//EXOLAB/Castor Mapping DTD Version 1.0//EN"                         
+"http://castor.org/mapping.dtd">
+<mapping>     
+	<class name="com.hmkcode.vo.Article">                 
+		<map-to xml="article" />                 
+		<field name="title" type="string">            
+			<bind-xml name="title" node="attribute"/>        
+		</field>
+		<field name="url" type="string">            
+			<bind-xml name="url" node="element"/>        
+		</field>                  
+		<field name="categories" type="string" collection="arraylist">             
+			<bind-xml name="category" />        
+		</field>             
+		<field name="tags" type="string" collection="arraylist">             
+			<bind-xml name="tag" />        
+		</field>
+	</class>
+</mapping>

Java.temp1-master/castor-xml-object/pom.xml

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+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>com.hmkcode</groupId>
+  <artifactId>castor-xml-object</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>jar</packaging>
+
+  <name>castor-xml-object</name>
+  <url>http://maven.apache.org</url>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <dependencies>
+
+    <dependency>
+		<groupId>org.codehaus.castor</groupId>
+		<artifactId>castor</artifactId>
+		<version>1.2</version>
+	</dependency>
+     <dependency>            
+     	<groupId>xerces</groupId>            
+     	<artifactId>xercesImpl</artifactId>            
+     	<version>2.8.1</version>        
+     </dependency>
+
+  </dependencies>
+</project>

Java.temp1-master/castor-xml-object/src/main/java/com/hmkcode/App.java

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+package com.hmkcode;
+
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.util.LinkedList;
+
+import org.exolab.castor.xml.MarshalException;
+import org.exolab.castor.xml.Marshaller;
+import org.exolab.castor.xml.Unmarshaller;
+import org.exolab.castor.xml.ValidationException;
+
+import com.hmkcode.vo.Article;
+
+public class App 
+{
+    public static void main( String[] args )
+    {
+
+    	try {
+
+	    	//( 1 ) OBJECT --> XML
+    		FileWriter writer = new FileWriter("article.xml");
+			Marshaller.marshal(createArticle(), writer);
+			writer.close();
+
+
+	    	//( 2 ) XML --> OBJECT
+			FileReader reader = new FileReader("article.xml");
+			Article article = (Article) Unmarshaller.unmarshal(Article.class, reader);
+
+			System.out.println(article);
+
+
+		} catch (IOException e) {
+			e.printStackTrace();
+		} catch (MarshalException e) {
+			e.printStackTrace();
+		} catch (ValidationException e) {
+			e.printStackTrace();
+		}
+
+    }
+
+    public static Article createArticle(){
+    	Article article = new Article();
+
+    	article.setTitle("Castor - Java Object to XML & XML to Object Mapping");
+    	article.setUrl("http://hmkcode.com/castor-java-object-xml");
+    	article.addCategory("Java");
+    	article.addTag("Java");
+    	article.addTag("Castor");
+    	article.addTag("XML");
+    	article.addTag("Marshalling");
+    	article.addTag("Unmarshalling");
+
+    	return article;
+    }
+}

Java.temp1-master/castor-xml-object/src/main/java/com/hmkcode/AppMapping.java

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+package com.hmkcode;
+
+import java.io.FileReader;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.Reader;
+import java.io.Writer;
+
+import org.exolab.castor.mapping.Mapping;
+import org.exolab.castor.mapping.MappingException;
+import org.exolab.castor.xml.MarshalException;
+import org.exolab.castor.xml.Marshaller;
+import org.exolab.castor.xml.Unmarshaller;
+import org.exolab.castor.xml.ValidationException;
+import org.exolab.castor.xml.XMLContext;
+
+import com.hmkcode.vo.Article;
+
+
+public class AppMapping 
+{
+    public static void main( String[] args )
+    {
+
+    	try {
+        	//Load Mapping
+        	Mapping mapping = new Mapping();
+			mapping.loadMapping("mapping.xml");
+			XMLContext context = new XMLContext();
+	    	context.addMapping(mapping);
+
+	    	//( 1 ) OBJECT --> XML
+
+	    	//1.1 Prepare file writer 
+	    	Writer writer = new FileWriter("mapped_article.xml");
+
+	    	//1.2 Create a new Marshaller
+	    	Marshaller marshaller = context.createMarshaller();
+	    	marshaller.setWriter(writer);
+
+	    	//1.3 Marshal "map" to xml
+	    	marshaller.marshal(createArticle());
+
+	    	//1.4
+	    	writer.close();
+
+
+	    	//( 2 ) XML --> OBJECT
+
+	    	//2.1 Prepare file writer 
+	    	Reader reader = new FileReader("mapped_article.xml");
+
+	    	//2.2 Create a new Unmarshaller
+	    	Unmarshaller unmarshaller = context.createUnmarshaller();
+	    	unmarshaller.setClass(Article.class);
+
+	    	//2.3 Unmarshal "map" to Object
+	    	Article article = (Article) unmarshaller.unmarshal(reader);
+
+	    	//2.4 
+	    	reader.close();
+
+	    	System.out.println(article);
+
+		} catch (IOException e1) {
+			e1.printStackTrace();
+		} catch (MappingException e1) {
+			e1.printStackTrace();
+		} catch (MarshalException e) {
+			e.printStackTrace();
+		} catch (ValidationException e) {
+			e.printStackTrace();
+		}
+    }
+    public static Article createArticle(){
+    	Article article = new Article();
+
+    	article.setTitle("Castor - Java Object to XML & XML to Object Mapping");
+    	article.setUrl("http://hmkcode.com/castor-java-object-xml");
+    	article.addCategory("Java");
+    	article.addTag("Java");
+    	article.addTag("Castor");
+    	article.addTag("XML");
+    	article.addTag("Marshalling");
+    	article.addTag("Unmarshalling");
+
+    	return article;
+    }
+}