Java Serialization and Networking MCQ Questions | Java Program MCQs

import java.net.*;
class networking 
{
    public static void main(String[] args) throws UnknownHostException 
    {
        InetAddress obj1 = InetAddress.getByName("cisco.com");
        System.out.print(obj1.getHostName());
    }
}

import java.io.*;
class streams
{
    public static void main(String[] args) 
    {
        try
        {
      FileOutputStream fos = new FileOutputStream("serial");
      ObjectOutputStream oos = new ObjectOutputStream(fos);
            oos.writeFloat(3.5);
            oos.flush();
            oos.close();
  }
  catch(Exception e)
        {
      System.out.println("Serialization" + e);
            System.exit(0);
        }
  try 
        {
      float x;
      FileInputStream fis = new FileInputStream("serial");
      ObjectInputStream ois = new ObjectInputStream(fis);
            x = ois.readInt();
            ois.close();
      System.out.println(x);		    	
  }
  catch (Exception e)
        {
            System.out.print("deserialization");
      System.exit(0);
  }
    }
}

import java.net.*;
class networking 
{
    public static void main(String[] args) throws MalformedURLException 
    {
        URL obj = new URL("https://www.example.com/javamcq");
        System.out.print(obj.getPort());
    }
}