If you are suppossed to be writing one, then write one, and if you have a specific problem, check back with us. If you simply want to find one to use, check with Google, there are more than enough out there.

So basically you want a calculator in java which emulates the one in windows.

There should be lots of examples out there, even some which handles more complex crap like RPN notation. I'm feeling bored (holidays) I might write a RPN calculator with a nice gui for fun.

tat easy.. u haf each button add a actionlistener..
and inside the action listener perform the required statements lor.
i did that in my school before

For u it might be.There is surely a difference between you and me but the aim of this forum is to exchange ideas.Not to overact and undermine others.
Any way the calculator will be using numbers as input from the buttons as well as from a text file.
That is to say the file will have random real numbers arranged randomly.You have to input thos numbers from the file.
For example if the file has "3,7.9,-9.3,100" then the user has to choose which numbers to take as operands.Its a kind of assigning the text into a string variable, splitting it into parts and manipulating with the elements of the array of the strings.

The idea is to help others, not to enlist them to do your homework for you.
You showed no interest at all in doing anything of your own, just sitting back and waiting for a complete solution to be handed to you on a golden platter.

That's not going to fly, especially since you're not paying us consultancy fees (at $150 an hour per person for a minimum of 80 hours per person).

How about this:

http://leepoint.net/notes-java/45exa...ator/calc.html

Thank you for your solutions
But I dont know java very well.
What I know is VB 6.0 and VB.NET
and also as to the content of your hard work you have developed a converter(to number from string).That is good but i need inputs to be selected randomly from the file.
The only thing I should ask everybody is how to select interest operands i.e any operands of interest from the text file.
Thank you.
Embeza

Hullo, can you please explain this in greated detail with an example.

Reading from a file is simple when you know how. But what does the file input look like?

So you helped the kid by doing his homework for him, now he can claim a decent grade for doing no work at all.
What does that do for the profession, except causing even more unqualified idiots to enter the marketplace?