lab.art

Class Average

java.lang.Object

lab.art.Expression

lab.art.BinaryExpression

lab.art.Average

public class Average
extends BinaryExpression

This class represents the average expression.

Constructor Summary

Constructors

Constructor and Description
Average(Expression first, Expression second) Initializes this average expression with the given two subexpressions.

Method Summary

Methods

Modifier and Type	Method and Description
double	evaluate(double x, double y) Evaluates this average expression at the given x- and y-coordinate.
String	toString() Returns a string representation of this average expression.

Methods inherited from class lab.art.BinaryExpression

equals, evaluate, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Average

public Average(Expression first,
       Expression second)

Initializes this average expression with the given two subexpressions.

Parameters:

first - the first subexpression.

second - the second subexpression.

Precondition:

first != null, second != null

Method Detail

evaluate

public double evaluate(double x,
              double y)

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

Specified by:

evaluate in class Expression

Parameters:

x - the x-coordinate.

y - the y-coordinate.

Precondition:

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

Returns:

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

toString

public String toString()

Returns a string representation of this average expression. The string consists of "average(" followed by the string representation of the first subexpression, followed by ", " followed by the string representation of the second subexpression, followed by ")".

Overrides:

toString in class Object

Returns:

string representation of this average expression.