import com.maplesoft.openmaple.*;

import com.maplesoft.externalcall.MapleException;

class Example

{

    public static void main( String notused[] ) throws MapleException

    {

    String mapleArgs[];

    Engine engine;

    ComplexNumeric n1;

    Numeric im;

    mapleArgs = new String[1];

    mapleArgs[0] = "java";

    engine = new Engine( mapleArgs, new EngineCallBacksDefault(),

        null, null );

    n1 = (ComplexNumeric)engine.evaluate( "10+20*I:" );

    System.out.println( n1 );

    im = n1.imaginaryPart();

    System.out.println( im );

    }

}

10+20*I

20