Java Autoboxing

Autoboxing in java is the ability to convert or cast between object wrapper and it's primitive type.

This is the actual implementation(without autoboxing)
public class OldVersion {
 public static void main(String[] args) {
    ArrayList list_1 = new ArrayList();
    for(int i = 0; i < 10; i++){
        list_1.add(new Integer(i));
    }
 }

The new version(with autoboxing)
public class NewVersion {
  public static void main(String[] args) {
      ArrayList<Integer> list_1 = new ArrayList<Integer>();
      for(int i = 0; i < 10; i++){
         list_1.add(i);
      }
  }
}