lab.art

Class Expression

java.lang.Object

lab.art.Expression

Direct Known Subclasses:

BinaryExpression, UnaryExpression, VariableX, VariableY

public abstract class Expression
extends Object

This class represents an expression.

Constructor Summary

Constructors

Constructor and Description
Expression() Initializes this expression.

Method Summary

Methods

Modifier and Type	Method and Description
abstract double	evaluate(double x, double y) Evaluates this expression at the given x- and y-coordinate.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Expression

public Expression()

Initializes this expression.

Method Detail

evaluate

public abstract double evaluate(double x,
              double y)

Evaluates this expression at the given x- and y-coordinate.

Parameters:

x - the x-coordinate.

y - the y-coordinate.

Precondition:

x >= -1 && x <= 1, y >= -1 && y <= 1

Returns:

the value of this expression at the given x- and y-coordinate.