Ken said:
OK, I tried leaving both variables, words and wordList, as null after the
constructor completes and setting them only when a word is added or when
setWords is called. This had no affect on the program at all.
The following does work for me, you might have some sort of logic error
in your current program.
*******<XmlTest.java>
package xmlencdec;
import java.beans.XMLDecoder;
import java.beans.XMLEncoder;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
public class XmlTest {
private List<Words> wordsDefs;
private Set<String> words;
public XmlTest()
{
wordsDefs = new ArrayList<Words>();
words = new HashSet<String>();
}
public Set<String> getWords() {
HashSet<String> temp = new HashSet<String>();
temp.addAll( words );
return temp;
}
public void setWords( Set<String> s ) {
words = new HashSet();
words.addAll( s );
}
public List<Words> getWordsDefs()
{
return wordsDefs;
}
public void setWordsDefs( List<Words> wordsDefs )
{
this.wordsDefs = wordsDefs;
}
public void add( String w, String d )
{
wordsDefs.add( new Words( w, d ) );
words.add( w );
}
@Override
public String toString() {
return words.toString() + wordsDefs.toString();
}
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
ArrayList<String> al = new ArrayList<String>();
al.add( "one fish" );
al.add( "two fish" );
System.out.println( testEncoderDecoder( al ) );
XmlTest xt = new XmlTest();
xt.add( "one fish", "red fish" );
xt.add( "two fish", "blue fish" );
System.out.println( testEncoderDecoder( xt ) );
}
private static Object testEncoderDecoder( Object o )
{
ByteArrayOutputStream ao = new ByteArrayOutputStream( 16*1024 );
XMLEncoder xe = new XMLEncoder( ao );
xe.writeObject( o );
xe.close();
byte[] bytes = ao.toByteArray();
ByteArrayInputStream ai = new ByteArrayInputStream( bytes );
System.out.println( "Object: " + o.getClass().getName() );
System.out.println( "XML:" );
BufferedReader br = new BufferedReader( new InputStreamReader(
ai ));
String line;
try {
while( (line = br.readLine()) != null ) {
System.out.println( line );
}
}
catch( IOException ex ) {
ex.printStackTrace();
throw new WrappedException( ex );
}
XMLDecoder xd = new XMLDecoder( new ByteArrayInputStream( bytes
) );
Object retVal = xd.readObject();
xd.close();
return retVal;
}
static class WrappedException extends RuntimeException {
public WrappedException( Throwable cause )
{
super( cause );
}
}
}
******</XmlTest.java>
******<Words.java>
package xmlencdec;
public class Words {
private String word;
private String definition;
public Words()
{
}
public Words( String word, String definition )
{
this.word = word;
this.definition = definition;
}
public String getDefinition()
{
return definition;
}
public void setDefinition( String definition )
{
this.definition = definition;
}
public String getWord()
{
return word;
}
public void setWord( String word )
{
this.word = word;
}
@Override
public String toString() {
return word+":"+definition;
}
}
*******</Words.java>
