super不明白

import java.util.ArrayList;
import java.util.List;


public class InfiniteRecursion {
	public String toString(){
		return "InfiniteRecursion" + super.toString();
		
	}
	public static void main(String args[]){
		List<InfiniteRecursion> v = new ArrayList<InfiniteRecursion>();
		for(int i=0;i < 10;i++)
			v.add(new InfiniteRecursion());
		System.out.println(v);
	}
}