package com.surjendu;



import java.util.ArrayList;


import java.util.List;


import org.apache.commons.lang.ArrayUtils;




public class CompareList {


public static void main(String[] args) {


CompareList list = new CompareList();

System.out.println(ArrayUtils.toString(list.getNonExtantItems(
list.getExtantItems(), list.getRecordedItems()).toArray()));


System.out.println(ArrayUtils.toString(list.getUnRecordedItems(
list.getExtantItems(), list.getRecordedItems()).toArray()));
}




private List getExtantItems() {


List extantItems = new ArrayList();


extantItems.add("cat");


extantItems.add("dog");


extantItems.add("camel");


extantItems.add("monkey");


extantItems.add("lamb");


extantItems.add("squirrel");


extantItems.add("chicken");


return extantItems;


}



private List getRecordedItems() {


List recordedItems = new ArrayList();


recordedItems.add("cat");


recordedItems.add("dog");

recordedItems.add("camel");

recordedItems.add("monkey");

recordedItems.add("chicken");

recordedItems.add("pig");

recordedItems.add("cow");

return recordedItems;

}



private List getNonExtantItems(List extantItems, List recordedItems) {

List nonExtantItems = new ArrayList();


for (int i = 0; i < recordedItems.size(); i++) {

if (!extantItems.contains((String) recordedItems.get(i))) {

nonExtantItems.add((String) recordedItems.get(i));

}


}

return nonExtantItems;


}



private List getUnRecordedItems(List extantItems, List recordedItems) {

List unRecordedItems = new ArrayList();


for (int i = 0; i < extantItems.size(); i++) {

if (!recordedItems.contains((String) extantItems.get(i))) {

unRecordedItems.add((String) extantItems.get(i));

}


}

return unRecordedItems;

}


}