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Old 06-14-2008, 07:50 AM
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Random numbers
hello friends,

I want to create a random numbers like image verification no it means when we register any of the site it is asking image verification no ........ i have to create that type random no ...... i hope u will help me.......... it s very urgent......

Thanks in advance......
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Old 06-14-2008, 12:10 PM
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Random numbers in java
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A specific, detailed, simple, well elaborated, and "tested before asking" question may gather more quick replies. hopefully
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Old 06-14-2008, 12:32 PM
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Thank q Mr.sukatoa...i saw that but i want random alphanumeric values...... pls help me......
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Old 06-14-2008, 03:04 PM
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Quote:
i saw that but i want random alphanumeric values
Ah, the dreaded "requirement creep". You will do better here to post your full requirements at the beginning of the thread rather than later. What you may do here is create a random number between say 33 and 126 and then cast the number to a char.

for instance:
Code:
int delta = '~' - '!' + 1; // the difference between the top and bottom ascii character Random random = new Random(); for (int i = 0; i < 500; i++) { char randomChar = (char)(random.nextInt(delta) + '!'); System.out.print(randomChar + " "); if ((i+1) % 20 == 0) { System.out.println(); } }
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