EDU.ksu.cis.calculator.defaultmodel
Class TwoToPower

java.lang.Object
  |
  +--EDU.ksu.cis.calculator.defaultmodel.TwoToPower

All Implemented Interfaces:

EncodedOperation, Operation

public class TwoToPower

extends Object

implements EncodedOperation

The operation of raising 2 to an arbitrary power.

Author:

Rod Howell (howell@cis.ksu.edu)

Constructor Summary

TwoToPower()

Method Summary

Object	doOperation(Object[] operands) Returns the result of raising 2 to the power of operands[0].
int	numOperands() Returns 1.

Methods inherited from class java.lang.Object

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

Constructor Detail

TwoToPower

public TwoToPower()

Method Detail

numOperands

public int numOperands()

Returns 1.

Specified by:

numOperands in interface Operation

doOperation

public Object doOperation(Object[] operands)
                   throws ArrayIndexOutOfBoundsException,
                          ClassCastException,
                          ArithmeticException

Returns the result of raising 2 to the power of operands[0].

Specified by:

doOperation in interface EncodedOperation

Parameters:

operands - The operands for the operation. The length of this array should match the value returned by Operation.numOperands().

Returns:

The result of the operation.

Throws:

ArrayIndexOutOfBoundsException - If operands is not of length at least 1.

ClassCastException - If operands[0] is not a LargeInteger.

ArithmeticException - If operands[0] is negative.