java - Compare 2 lists with different objects to find equals object attribute -

i'm looking elegant , efficient way in java:

public class object1{    string name;    int age; }  public class object2{    string name;    string adress; }  list<object1> list1; list<object2> list2; 

i want find out every object1 in list1 if there object2 in list2 same name. there better way wrote below?

for (object1 element1 : list1) {    (object2 element2 : list2) {      if (element2.name.equals(element1.name)){        // stuff       }    } } 

if implement comparator on names in classes could, sort them. having lists sorted, allow binary search on them. each element in object1, binary search in object2.

this make code faster, o(n * m) complexity, o(n * log(m)) complexity.