The Sample code given below will test your knowledge on ArrayList of Java and this example is very helpful for successful completion of SCJP examination.

Given below the sample code :

public static void addition(List list) {
list.add("0021");
}
public static void main(String[] args) {
List<Integer> myList = new ArrayList<Integer>();
addition(myList);
System.out.println(myList.get(0));
}

What will be the output of the above code ?

1. 21

2. 0021

3. An exception is thrown at runtime.

4. Compilation fails.

Answer

(2)

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