Problems in executing a reverseHashMap progam

[vidu mayur]

Hi all
I was trying to reverse a HashMap and it compiled fine. When I executed it, it gave me a java.lang.OutOfMemoryError. Then, I restarted the PC and tried executintg other working programs/this program, the process never ends. I want to execute other programs now. Please help me!
P.S: If you want to look at the code which caused all this, please see below

import java.util.*;
import java.util.Enumeration;

public class HashMapTrial {
    
    /** Creates a new instance of HashMapTrial */
    public HashMapTrial() {
             
    }
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
                
        HashMap map = new HashMap();
//creating a hashmap with access order
        HashMap cache = new LinkedHashMap(10, 0.8F, true){
            protected boolean removeEldestEntry(Map.Entry eldest){
                 return false;
            }
        };
        Integer i1 = new Integer(3);
        cache.put( new Integer( 2 ), "two" );
        cache.put(i1, "three");
        cache.put( new Integer( 4 ), "four" );
        
        System.out.println(cache);
        System.out.println("Entryset" + cache.entrySet());
        System.out.println("Found i1 "+ cache.get(i1));
        System.out.println("Entryset" + cache.entrySet());
                
        HashMap reverse = reverseMap(cache);
        System.out.println(reverse.entrySet());
        
    }
    public static HashMap reverseMap(HashMap hash){
        HashMap r = new HashMap();
        LinkedList list = new LinkedList();
        Iterator ite = hash.keySet().iterator();
        while(ite.hasNext()){
            list.add(ite);
        }
        ListIterator iterator = list.listIterator( list.size() );
        while ( iterator.hasPrevious() ){
// trying to get the value from get(key)
            Object hv = hash.get(iterator.previous());
            r.put(iterator.previous(), hv);
        } 
  
        
        return r;
    }
       
    
}
  

Thanks in advance

[vidu mayur]

Hi all
I found the error. The list didn't have any values in it.
Thanks
Vidu