I will explain with example: My input string is as follows: "parametername1=value1 parametername2=value2" Now, if i dont give value for any of the parameter it should say value missing for the "parametername". If i give any parameter which is not defined then it should say unknown parameter. Now there are 2 parameters 'name' and 'age'. If my input is nameage=john it should say unknown parameter 'nameage' instead it is saying value missing for the parameter 'name'. Can anyone help me out in this. Thanks in advance Ganz    More>>