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Java Discussion Thread
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Dec 28th, 2007

request and question in float random number

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Hi guys hope you fine
I have a request and question, for my request I would like from you to recommend me
which books and tutorials that I may follow help me to understand how to read and write files in java I really need to know that. and for my question is how to make a float random ends with five or zero only. For example 0.25 , 0.30 , 0.35 , 0.40 , 0.45 ,0.50 , 0.55 , and so on till number one. I don't need a float numbet appears to me such as 0.23 , 0.14 , 0.78 , 0.99 , 0.61 , 0.12 , etc ... so how it's done that

thanks,
my regard

alsoumhi

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Dec 28th, 2007

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Re: request and question in float random number

how about you just store it as an integer which when divided by 20 yields your number?

bugmenot

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Dec 29th, 2007

Re: request and question in float random number

hi reading from file is not hard. <<Thinking java>> may give you some help.

Great_qiang

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Dec 30th, 2007

Re: request and question in float random number

I would do it as such. Assuming you want the floating number to be displayed to only 2dp.

I would first, generate an integer between 1-9, then divide it by 10.
Then I would have a second random function that generates either 0.05 or 0.0
I would then add the two together.

So for example:-

7 / 10 = 0.7
0.05
0.7 + 0.05 = 0.75

Last edited by iamthwee; Dec 30th, 2007 at 12:31 pm.

iamthwee

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