Random number

[Carolyn]

Hi there

I'm having problems with generating random numbers, and would
appreciate any advice. I'm sure I'm doing something very simple wrong
but I've having been tring for ages and can't seem to get this
working.

I need to seed the randon number generator to a value(oldPosition) and
then produce a series of random numbers from this. I have given the
relevant code below

import java.util.*;

class Resolution
{
public void resolutionMethod(int oldPosition)
{
long seed = (long)oldPosition;
Random r = new Random(seed);

for (int i =0; i < 5; i++)
{
int nextNumber = r.nextInt();
System.out.println("random number " + i + nextNumber);
}
.......

I get the following error:

Resolution.java:14: Class Random not found.
Random r = new Random(seed);


Thanks
Carolyn

 

[Roedy Green]

I'm having problems with generating random numbers, and would
appreciate any advice. I'm sure I'm doing something very simple wrong
but I've having been tring for ages and can't seem to get this
working.

see
http://mindprod.com/jgloss/randomnumbers.html

 

[Chris Smith]

I'm having problems with generating random numbers, and would
appreciate any advice. I'm sure I'm doing something very simple wrong
but I've having been tring for ages and can't seem to get this
working.

I get the following error:

Resolution.java:14: Class Random not found.
Random r = new Random(seed);

That doesn't look like an error message from any compiler I'm aware of.
What compiler are you using?

--
www.designacourse.com
The Easiest Way to Train Anyone... Anywhere.

Chris Smith - Lead Software Developer/Technical Trainer
MindIQ Corporation

 

[Paul Lutus]

Hi there

I'm having problems with generating random numbers, and would
appreciate any advice. I'm sure I'm doing something very simple wrong
but I've having been tring for ages and can't seem to get this
working.

I need to seed the randon number generator to a value(oldPosition) and
then produce a series of random numbers from this.

Just read the documentation, slowly and carefully.

import java.util.*;

public class Test {

public static void main(String[] args)
{

Random r = new Random();
r.setSeed(12345);
for(int i = 0;i < 20;i++) {
System.out.println(r.nextDouble());
}
}
}