import java.util.ArrayList;
public class ArrayListDemo {
public static void main(String[] args) {
ArrayList<Integer> arrlist = new ArrayList<Integer>(5);
arrlist.add(15);
arrlist.add(22);
arrlist.add(30);
arrlist.add(40);
for (Integer number : arrlist) {
System.out.println("Number = " + number);
}
int retval=arrlist.get(3);
System.out.println("Retrieved element is = " + retval);
}
}
輸出
Number = 15
Number = 22
Number = 30
Number = 40
Retrieved element is = 40