java create list of list code example
Example 1: how to create a list in java
import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
class scratch{
public static void main(String[] args) {
List<Integer> aList = new ArrayList<>();
List<Integer> lList = new LinkedList<>();
}
}
Example 2: Lists inside lists in java
public class GuiTest {
public static void main(String[] args) {
List<List<Integer>> MainList = new ArrayList<List<Integer>>();
Random NewRandomNumber = new Random();
for (int i = 0; i < 10; i++) {
List<Integer> SecondList = new ArrayList<Integer>();
MainList.add(SecondList);
for (int i2 = 0; i2 < 10; i2++) {
SecondList.add(NewRandomNumber.nextInt(6));
}
}