To join lists in Java, you can use the `addAll` method to combine multiple lists into a single list.
In this example,
list1
and list2
with integer values.joinedList
and use the addAll
method to add all elements from list1
and list2
to joinedList
.import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class Main {
public static void main(String[] args) {
List<Integer> list1 = Arrays.asList(1, 2, 3);
List<Integer> list2 = Arrays.asList(4, 5, 6);
List<Integer> joinedList = new ArrayList<>();
joinedList.addAll(list1);
joinedList.addAll(list2);
System.out.println("Joined List: " + joinedList);
}
}
Joined List: [1, 2, 3, 4, 5, 6]
In this example,
listA
, listB
, and listC
with string values.resultList
and use the addAll
method to add all elements from listA
, listB
, and listC
to resultList
.import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
public class Main {
public static void main(String[] args) {
List<String> listA = Arrays.asList("apple", "banana");
List<String> listB = Arrays.asList("cherry", "date");
List<String> listC = Arrays.asList("fig", "grape");
List<String> resultList = new ArrayList<>();
resultList.addAll(listA);
resultList.addAll(listB);
resultList.addAll(listC);
System.out.println("Joined List: " + resultList);
}
}
Joined List: [apple, banana, cherry, date, fig, grape]
In this tutorial, we learned How to Join Lists in Java language with well detailed examples.