Can you make Arraylist volatile

add() method of HashSet class is used to add elements to its object 

The maximum number of public classes we can have in single file is ?

Which Apache Commons library provides the FileUtils class with methods for file operations?

What exception is thrown by the parseInt() method?

Deduce the output of the following code:

public class Test{

public static void main(String args[]){

int a=7;

System.out.println(a<<2);

}

}

When array element is accessed  beyond the array size

Which of these methods can be used to determine if a given Character object is a valid part of a Java identifier?

What is the process of defining a method, which calls itself again and again until any condition is met?

What will be the output of the following Java program?

import java.net.*;

public class Networking

{

public static void main(String[] args) throws UnknownHostException

{

InetAddress obj1 = InetAddress.getByName("cisco.com");

InetAddress obj2 = InetAddress.getByName("sanfoundry.com");

boolean x = obj1.equals(obj2);

System.out.print(x);

}

}