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nagarjuna
java Collections
1 Answer(s)      7 years ago
Posted in : Java Beginners
HI Friends,

I want to pick a random element from a set.How can i achieve this.I have a set of objects , I want to pick a random object every time from the set..

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April 29, 2010 at 12:27 PM


Hi Friend,

Try the following code:

import java.util.*;
class PickRandomFromSet{
public static void main(String[] args) throws Exception{
Set<Integer> set = new HashSet<Integer>();
set.add(10);
set.add(20);
set.add(30);
set.add(40);
set.add(50);

Random rand = new Random();
for(int i=0;i<5;i++){
System.out.println(set.toArray()[rand.nextInt(set.size())]);
Thread.sleep(5000);
}
}
}

Thanks









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