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JSAMPLES.Z
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Serial2.java
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1998-05-08
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// Copyright(c) 1997 ObjectSpace, Inc.
import com.objectspace.jgl.*;
import java.io.*;
import java.util.*;
public class Serial2
{
static public void write()
{
try
{
// create a list of names
DList names = new DList();
names.add( "Peter Parker" );
names.add( "Frank Castle" );
names.add( "Logan" );
names.add( "Steve Rogers" );
// save names to a file
ObjectOutput s = new ObjectOutputStream( new FileOutputStream( "Serial2.ser" ) );
s.writeObject( names );
// search for some particular entries
ForwardIterator wolverine = names.find( "Logan" );
ForwardIterator hulk = names.find( "Bruce Banner" );
// write the iterators to the file as well
s.writeObject( wolverine );
s.writeObject( hulk );
s.flush();
s.close();
}
catch ( IOException e )
{
System.out.println( "caught: " + e );
}
}
static public void read()
{
try
{
// read sequence and iterator from file
ObjectInputStream s = new ObjectInputStream( new FileInputStream( "Serial2.ser" ) );
DList names = (DList)s.readObject();
ForwardIterator wolverine = (ForwardIterator)s.readObject();
ForwardIterator hulk = (ForwardIterator)s.readObject();
// check the iterators
if ( wolverine.equals( names.end() ) )
System.out.println( "Don't know who Wolverine is" );
else
System.out.println( "Wolverine is also known as " + wolverine.get() );
if ( hulk.equals( names.end() ) )
System.out.println( "Don't know who the Hulk is" );
else
System.out.println( "Hulk is also known as " + hulk.get() );
}
catch ( IOException e1 )
{
System.out.println( "caught: " + e1 );
}
catch ( ClassNotFoundException e2 )
{
System.out.println( "caught: " + e2 );
}
}
public static void main( String args[] )
{
write();
read();
}
}