Question

I have a list of linkedlist.

    List<LinkedList<File1>> lists = 
        Collections.synchronizedList(new ArrayList<LinkedList<File1>>());

each linkedlist contains objects of type File1.

class File1
{
    int dist,nod;       
}

Can anyone help me to sort the elements based on dist.

I thought of using collections.sort() but this cannot be used in this case, so can anyone suggest a better idea?

Answer 1

Iterate over each linkedlist in your arraylist, then sort it. But to make sure that the elements are sorted on dist, you should implement Comparable:

public class File1 implements Comparable<File1>
{
    int dist, nod;

    public int compareTo(File1 f)
    {
        return Integer.compare(dist, f.dist);
    }
}