Random number generator

[kirankiku]

Random number it should be in between 0 to the my arraylist size

[r035198x]

Use java.util.Random.

[neeraj0708]

Try this....

import java.util.ArrayList;
class RandomNumberGenerator{
public static void main(String args[]){
ArrayList<String> al=new ArrayList<String>();
al.add("22");
al.add("32");
al.add("52");
al.add("72");
al.add("12");
 
int num=(int)Math.round(Math.random()*al.size());
System.out.println(num);
}
}
 
 

[neeraj0708]

If you want to use java.util.Random class

then follow this

Random r=new Random();
int num=r.nextInt(al.size());