List in java using Random Numbers

...
Arrays.asList("COMPUTER", "DATA", "PRINTER"));

As you can see from the compiler error, it takes an array as input, not a series of Strings. You can pass:

...
Arrays.asList(new String[] {"COMPUTER", "DATA", "PRINTER"}));

Second, your 'services' reference is not using generic types, so its contents have the compile-time type Object and not String. Instead you want:

List<String> services = new ArrayList<String>(

Third, the name of your variable is 'services' not 'list', so:

Collections.shuffle(services);

And likewise in the final statement. In this case the compiler is pretty much telling you exactly what the problem is. Did you read its output?

Try:

public class ShufflingListAndArray
{
  public static void main(String[] args) throws IOException

{
    List services = Arrays.asList("COMPUTER", "DATA", "PRINTER");

   Random rnd=new Random();
  String s = services.get(rnd.nextInt(services.size()));

    Collections.shuffle(list);


    //Collections.sort(list);


    System.out.println("List sorting :"+ list);
  }
} 

And see if you still get your rnd error messages, if you do, can you post the full message, it seems that there are parts of it cut off.

Also you haven't declared the list variable: Collections.shuffle(list);

Working fine for me. use services instead of list, in shuffle and while printing

This solves all your errors:

    List<String> services = Arrays.asList("COMPUTER", "DATA", "PRINTER");
    Random rnd = new Random();
    String s = services.get(rnd.nextInt(services.size()));
    Collections.shuffle(services);
    // Collections.sort(services);
    System.out.println("List sorting :" + services);

BTW The String s is not used anywhere.