math.objects
Class BinaryExpression

java.lang.Object
  |
  +--math.objects.Expression
        |
        +--math.objects.BinaryExpression

Direct Known Subclasses:

Add, Divide, Log, Multiply, Power, Subtract

public abstract class BinaryExpression

extends Expression

The BinaryExpression class defines an extends of the Expression class to include binary expressions like Add and Mulitply and a left child and right child each pointing to a expr class object

Since:

JDK1.1

Author:

Peter Staab

, Pete Fox , both for the Mathematical Visualization Project for the Department of Applied Mathematics, University of Colorado at Boulder

Field Summary

protected Expression	leftChild The variables leftChild and rightChild store the first and second children of binary expressions.
protected Expression	rightChild The variables leftChild and rightChild store the first and second children of binary expressions.

Constructor Summary

protected

BinaryExpression(Expression left, Expression right) Creates a new BinaryExpression instance.

Method Summary

Expression	getLeftChild() The method getLeftChild returns the left child of a binary expression.
Expression	getRightChild() The method getRightChild returns the right child of a binary expression.
void	setLeftChild(Expression expr) The method setLeftChild sets the left child.
void	setRightChild(Expression expr) The method setRightChild sets the right child expression.
Expression	simplify() A method that returns a Expression representation of the Log object with its Children in a simplified form with redundant terms combined and terms multiplied by zero eliminated.

Methods inherited from class math.objects.Expression

differentiate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, evaluateVariables

Methods inherited from class java.lang.Object

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

Field Detail

leftChild

protected Expression leftChild

The variables leftChild and rightChild store the first and second children of binary expressions.

rightChild

protected Expression rightChild

The variables leftChild and rightChild store the first and second children of binary expressions.

Constructor Detail

BinaryExpression

protected BinaryExpression(Expression left,
                           Expression right)

Creates a new BinaryExpression instance.

Parameters:

left - an Expression value

right - an Expression value

Method Detail

getLeftChild

public Expression getLeftChild()

The method getLeftChild returns the left child of a binary expression.

Returns:

an Expression value

setLeftChild

public void setLeftChild(Expression expr)

The method setLeftChild sets the left child.

Parameters:

expr - an Expression value

getRightChild

public Expression getRightChild()

The method getRightChild returns the right child of a binary expression.

Returns:

an Expression value

setRightChild

public void setRightChild(Expression expr)

The method setRightChild sets the right child expression.

Parameters:

expr - an Expression value

simplify

public Expression simplify()

A method that returns a Expression representation of the Log object with its Children in a simplified form with redundant terms combined and terms multiplied by zero eliminated.

Specified by:

simplify in class Expression

Returns:

an Expression object in a simplified form