import javassist.CannotCompileException;
import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtMethod;
import javassist.CtNewMethod;
import javassist.NotFoundException;

public class JavassistCode {
	private ClassPool pool;
	private CtClass ctClass;
	private CtMethod javassitMethod;
	private String expression = "x*x+x/2";
	private String method ="public double eval(double x){return{"+ expression +"};}";
	private MyFrame myframe;

	public JavassistCode(MyFrame myFrame) throws CannotCompileException, NotFoundException, SecurityException, NoSuchMethodException, InstantiationException, IllegalAccessException {

		this.myframe=myFrame;

		pool = ClassPool.getDefault();
		ctClass = pool.makeClass("javassistClass");
		
		javassitMethod = CtNewMethod.make(method, ctClass);
		ctClass.addMethod(javassitMethod);

		Class clazz = ctClass.toClass();
		
	}

}