 evaluate - Maple Help

Engine.evaluate

evaluate a Maple statement Calling Sequence Algebraic evaluate( String statement ) throws MapleException Parameters

 statement - Maple statement to be evaluated Description

 • The evaluate method parses then evaluates statement and returns the results as an Algebraic object.
 • The statement parameter must be terminated with a colon or semicolon.  Using a colon suppresses output being generated.
 • Errors generated during the parse and evaluation of the statement are directed to the errorCallBack method.  Other errors cause a MapleException to be raised. Examples

 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 ); engine.evaluate( "int(x,x);" ); engine.evaluate( "LinearAlgebra:-RandomMatrix( 3, 3 );" ); try { engine.evaluate( "syntax_error" ); } catch ( MapleException me ) { System.out.println( "Error: "+me.getMessage() ); } } }

Executing this code produces the following output.

 1/2*x^2 Matrix(3,3,{(1, 1) = -21, (1, 2) = -50, (1, 3) = -79, (2, 1) = -56, (2, 2) = 30, (2, 3) = -71, (3, 1) = -8, (3, 2) = 62, (3, 3) = 28},datatype = anything,storage = rectangular,order = Fortran_order,shape = []) Error: at offset 13, unexpected end of statement