been scouring the forum and cant figure this out.
i want to add all the elements from one arraylist to another arraylist. i dont want to iterate through the list and add them individually. and thought i could use addAll();
when i do arrayList1.addAll(arrayList2) it says incompatible types. how can i make it work or get something similar to work?
thanks
chris
we can add arralist to the end of arrayList using addAll().
It is working fine.
Example.
ArrayList al=new ArrayList();
al.add("A");
al.add("B");
al.add("C");
al.add("D");
ArrayList arrayList=new ArrayList();
arrayList.add("E");
arrayList.add("F");
arrayList.add("G");
arrayList.add("H");
arrayList.addAll(al);
System.out.println("arrayList"+arrayList);
ArrayList al=new ArrayList();
al.add("A");
al.add("B");
al.add("C");
al.add("D");
ArrayList arrayList=new ArrayList();
arrayList.add("E");
arrayList.add("F");
arrayList.add("G");
arrayList.add("H");
arrayList.addAll(al);
out.println("arrayList"+arrayList);
even we can add different types of objects into array list
*/
public class ArrayList_1
{
public static void main(String args[])
{
System.out.println("hi");
ArrayList al=new ArrayList();
al.add(Integer.valueOf("23"));// integer object
al.add("A");// String object
al.add("B");
al.add("C");
al.add("D");
ArrayList arrayList=new ArrayList();
arrayList.add("E");
arrayList.add("F");
arrayList.add("G");
arrayList.add("H");
arrayList.addAll(al);
System.out.println("arrayList"+arrayList);
}
}