Java tutorial
import java.util.ArrayList; import java.util.Collections; public class Main { public static void main(String[] args) { ArrayList<String> arrayList1 = new ArrayList<String>(); arrayList1.add("1"); arrayList1.add("2"); arrayList1.add("3"); ArrayList<String> arrayList2 = new ArrayList<String>(); arrayList2.add("One"); arrayList2.add("Two"); arrayList2.add("Three"); arrayList2.add("Four"); arrayList2.add("Five"); System.out.println(arrayList2); Collections.copy(arrayList2, arrayList1); System.out.println(arrayList2); } } /* [One, Two, Three, Four, Five] [1, 2, 3, Four, Five] */