com.klg.jclass.util.formulae
Class Subtract

java.lang.Object
  |
  +--com.klg.jclass.util.formulae.Operation
        |
        +--com.klg.jclass.util.formulae.Subtract

All Implemented Interfaces:

Cloneable, Expression

public class Subtract

extends Operation

This is a concrete implementation for the subtraction "-" operation. Subtraction is normally the difference between a pair of elements, but it can also be unary (returns negative) *???or between two lists???*.

Field Summary

Fields inherited from class com.klg.jclass.util.formulae.Operation

leftOperand, rightOperand

Constructor Summary

Subtract(com.klg.jclass.util.formulae.Expression left, com.klg.jclass.util.formulae.Expression right)
Create an operation to subtract two Expressions

Subtract(com.klg.jclass.util.formulae.Expression left, Number right)
Create an operation to subtract an Expression and a Number

Subtract(Number left, com.klg.jclass.util.formulae.Expression right)
Create an operation to subtract a Number and an Expression

Subtract(Number left, Number right)
Create an operation to subtract two Numbers

Method Summary

com.klg.jclass.util.formulae.Result

evaluate() Return the result of subtracting the operands

Methods inherited from class com.klg.jclass.util.formulae.Operation

clone

Methods inherited from class java.lang.Object

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

Constructor Detail

Subtract

public Subtract(com.klg.jclass.util.formulae.Expression left,
                com.klg.jclass.util.formulae.Expression right)

Create an operation to subtract two Expressions

Subtract

public Subtract(com.klg.jclass.util.formulae.Expression left,
                Number right)

Create an operation to subtract an Expression and a Number

Subtract

public Subtract(Number left,
                com.klg.jclass.util.formulae.Expression right)

Create an operation to subtract a Number and an Expression

Subtract

public Subtract(Number left,
                Number right)

Create an operation to subtract two Numbers

Method Detail

evaluate

public com.klg.jclass.util.formulae.Result evaluate()

Return the result of subtracting the operands

Specified by:

evaluate in interface Expression

Specified by:

evaluate in class Operation

Returns:

The result of the first operand minus the second