Compare List of List<Objects> in java - list

Question

I have List<List<MyObj>>.
List(1) : List<MyObj>
List(2) : List<MyObj>
List(3) : List<MyObj>
... & so on.
Structure of MyOBj is:
class MyObj {
String name;
String type;
}
I have to get name from MyObj, if type is same for any 2 entries present in List>.
What will be the optimal way to do that in java 7?

Answer 1

List<List<MyObj>> temp = new ArrayList();
sortByType(temp);
List<MyObj> result = new ArrayList();
for (List<MyObj> obj : temp) {
result.add(obj.get(0));
}
Collections.sort(result, new Comparator<MyObj>() {
#Override
public int compare(MyObj o1, MyObj o2) {
return o1.getType() - o2.getType();
}
});
return result.get(0);
private static void sortByType(List<List<MyObj>> result) {
for(List<MyObj> objs : result) {
Collections.sort(objs, new Comparator<MyObj>() {
#Override
public int compare(MyObj o1, MyObj o2) {
return o1.getType() - o2.getType();
}
});
}
}