com.elegantj.data.parser.postfixmathcommand
Class IsNull

java.lang.Object
  com.elegantj.data.parser.postfixmathcommand.PostfixMathCommand
      com.elegantj.data.parser.postfixmathcommand.IsNull

All Implemented Interfaces:

PostfixMathCommandI

public class IsNull

extends PostfixMathCommand

Checks whether the specified string is null or not
Command Method -> boolean isNull(Object obj) : obj - the object to be checked, return true if the obj is null

Constructor Summary

IsNull()

Method Summary

void	run(java.util.Stack inStack) Determines the node execution with the stack of arguments and store the result back to the stack.

Methods inherited from class com.elegantj.data.parser.postfixmathcommand.PostfixMathCommand

checkStack, getNumberOfParameters, getParameterTypes, getReturnType

Methods inherited from class java.lang.Object

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

Constructor Detail

IsNull

public IsNull()

Method Detail

run

public void run(java.util.Stack inStack)
         throws CommandFailedException,
                ArgumentRequiredException,
                InvalidArgumentException

Description copied from interface: PostfixMathCommandI

Determines the node execution with the stack of arguments and store the result back to the stack.

Parameters:

inStack - the stack of the arguments

Throws:

CommandFailedException

ArgumentRequiredException

InvalidArgumentException