Engine.stop
shutdown the kernel
Calling Sequence
Description
Examples
void stop() throws MapleException
The stop method shuts down the Maple session represented by the Engine object.
Any Algebraic objects will have their dispose method called. These objects can no longer be used to reference the values they represented before stop was called.
Even after stopping the current Engine object, new Engine objects cannot be created.
In the event of an error, stop raises a MapleException.
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 );
Numeric n = engine.newNumeric( 1000 );
List l = (List)engine.evaluate( "[1,2,3,4]:" );
RTable r = (RTable)engine.evaluate( "Array( 1..10, 1..10 ):" );
System.out.println( n.isDisposed() );
System.out.println( l.isDisposed() );
System.out.println( r.isDisposed() );
engine.stop();
try
engine.evaluate( "1+1;" );
}
catch ( MapleException me )
System.out.println( "Error: "+me.getMessage() );
Executing this code produces the following output.
false
true
See Also
ExternalCalling/Java/MapleException
OpenMaple
OpenMaple/Java/API
OpenMaple/Java/Engine
restart
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