Overcoming MIDP limitation for Random Number Generation
Derek Smith
Greenhorn
Joined: Jan 28, 2002
Posts: 5
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It has become quickly clear to me that the MIDP API has made a few changes to the java.util.Random class, particularly getting rid of the Random.nextDouble() method. So, how would you create a pseudorandom number between x and y using only the nextInt() method? I have tried a number of varieties and none have yielded accurate results. Thanks in advance... DMS
sameet more
Greenhorn
Joined: Dec 19, 2001
Posts: 10
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x = ((random.nextInt() >>> 1) % getWidth()) y = ((random.nextInt() >>> 1) % getHeight() x will be a number between 0 and the width of screen y will be a number between 0 and the height of the screen
sameet more <P>wireless java programmer
john muchow
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Joined: Mar 24, 2001
Posts: 49
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That last code example looks an awful lot like a code example from my book Either way, as a further clarification, the right shift (>>>) removes the sign bit, leaving you with a positive integer. The mod (%) operator will give you a value in the range you desire. John Author Core J2ME Technology and MIDP [ January 31, 2002: Message edited by: john muchow ]
sameet more
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Joined: Dec 19, 2001
Posts: 10
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well john muchow i do agree with u that i must have taken the code from one of the site on which u have put the code.i am still learning the tricks of j2me and hopefully we can learn a lot from ur articles on thew net as the book is still unavailable to us.Please accept my gratitude and keep contributing towards j2me. thanks
john muchow
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Joined: Mar 24, 2001
Posts: 49
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sameet, Glad to know that you've found some of the examples helpful. Keep experimenting with all the applications you can find, it's often the best way to learn. john
subject: Overcoming MIDP limitation for Random Number Generation
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