List.iterator
return iterator over List
List.listIterator
return listIterator over List
Calling Sequence
Description
Examples
java.util.Iterator<Algebraic> iterator( )
java.util.ListIterator<Algebraic> listIterator( )
java.util.ListIterator<Algebraic> listIterator( int index )
The iterator function returns an Iterator object which can be used to iterate over the List.
The listIterator function returns an ListIterator object which can be used to iterate over the List. The optional argument index specifies a zero-based starting index.
Both iterators traverse the list in list order, but the ListIterator can also be used to traverse the list in reverse order.
import java.util.Iterator;
import java.util.ListIterator;
import com.maplesoft.openmaple.*;
import com.maplesoft.externalcall.MapleException;
class Example
{
public static void main( String notused[] ) throws MapleException
String[] mapleArgs = { "java" };
Engine engine = new Engine( mapleArgs, new EngineCallBacksDefault(), null, null );
List s = (List)engine.evaluate( "[2,7.5,-1];" );
Iterator<Algebraic> it = s.iterator();
while (it.hasNext()) {
System.out.println( "Element: " + it.next() );
}
ListIterator<Algebraic> lit = s.listIterator();
while (lit.hasNext()) {
System.out.println( "Forward: " + lit.next() );
while (lit.hasPrevious()) {
System.out.println( "Reverse: " + lit.previous() );
Executing this code produces the following output:
Element: 2
Element: 7
Element: 5
Element: -1
Forward: 2
Forward: 7
Forward: 5
Forward: -1
Reverse: -1
Reverse: 5
Reverse: 7
Reverse: 2
See Also
ExternalCalling/Java/MapleException
OpenMaple
OpenMaple/Java/Algebraic
OpenMaple/Java/API
OpenMaple/Java/List
OpenMaple/Java/List/contains
OpenMaple/Java/List/containsAll
OpenMaple/Java/List/select
OpenMaple/Java/List/toArray
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