execute code from a string?

I have a Java program that draws lots of different types of curves.

I need to program how to save a drawing to a file.

It would be easiest to make a file that has the string of the code which recreates the drawing.

Is it possible to execute the content of a string?

A trivial example would be you declare an integer

int number

and you execute the string

"number = 10"

so that the value of number becomes 10.

Is this possible?

[487 byte] By [BrigitAnanyaa] at [2007-11-27 5:51:22]