Practical 15: Write a program to demonstrate the use of URL and URLConnection class and its methods

1) Write a program using URL class to retrieve the host, protocol, port and file of URL http://www.msbte.org.in
Ans:

import java.net.URL;
import java.net.MalformedURLException;
public class URLRetrive
{
    public static void main(String[] args) throws MalformedURLException  {
        URL url = new URL("https://msbte.org.in/");
        System.out.println("Authority: "+ url.getAuthority());
        System.out.println("Default Port: "+ url.getDefaultPort());
        System.out.println("File: "+ url.getFile());
        System.out.println("Path: "+ url.getPath());
        System.out.println("Protocol: "+ url.getProtocol());
        System.out.println("Reference: "+ url.getRef());
    }
}

Output:

2) Write a program using URL and URLConnection class to retrieve the date, content type, content length information of any entered URL.
Ans:

import java.net.URL;
import java.net.URLConnection;
import java.util.Scanner;
import  java.io.IOException;
import java.net.MalformedURLException;
import java.util.Date;

public class URLInfo 
{
    public static void main(String[] args) throws IOException , MalformedURLException
    {
        Scanner sc = new Scanner(System.in);

        System.out.print("Enter any Url: ");
        String ad = sc.nextLine();

        URL url = new URL(ad);
        URLConnection uc = url.openConnection();

        System.out.println("Date:"+ new Date(uc.getDate()) );
        System.out.println("Content Type: "+ uc.getContentType());
        System.out.println("Content Length: "+ uc.getContentLength());
        
    }
}

Output:

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