Java arraylist of arraylist
This section demonstrates how to make Java ArrayList of the ArrayList
This section demonstrates how to make Java ArrayList of the ArrayList
- Java arrayList can make the use of other arrayList.
- In one arrayList other arrayList can be added as the object
- It works as two dimension array.
Example of Java Arraylist of Arraylist
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
public class List1 {
public static void main(String[] args) {
ArrayList list=new ArrayList();
ArrayList list1=new ArrayList();
for(int x=0;x<=2;x++)
list1.add((int)(Math.random()*15));
ArrayList list2=new ArrayList();
for(int x=0;x<=2;x++)
list2.add((int)(Math.random()*15));
ArrayList list3=new ArrayList();
for(int x=0;x<=2;x++)
list3.add((int)(Math.random()*15));
list.add(list1);
list.add(list2);
list.add(list3);
System.out.println(list);
for (int i = 0; i < list.size(); i++) {
for (int j = 0; j < (list.get(i)).size(); j++) {
System.out.print((list.get(i)).get(j)+"\t");
}
System.out.print("\n");
}
}
}
Output
[[14, 8, 7], [0, 7, 11], [14, 9, 14]]
14 8 7
0 7 11
14 9 14
