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URLInformation
Posted on: March 19, 2008 at 12:00 AM

Here we are going to explain the method to find out the URL information. This program defines the IOException for the exception handling. This exception is thrown to indicate an I/O problem.

URLInformation

Here we are going to explain the method to find out the URL information. This program defines the IOException for the exception handling. This exception is thrown to indicate an I/O problem. The IO exception is defined in java.io package. Here, we are giving a complete example named URLInformation.java. In this example we use the URL class and make a object. After creating an object we assign a new URL to it. Then we just call a getContentType() method to retrieve the content information, getLastModified() method for retrieving the last modify date information of the URL, and getContentLength() method to retrieve the length of content.

Here is the code of program:


import java.net.*;

import java.io.*;

import java.util.Date;



public class URLInformation{

  public static void main(String args[]) throws Exception {

  int c;

  URL url = new URL

	

		(

	"http://www.roseindia.net/articles/writing-for-web/index.shtml"

	);

  URLConnection con = url.openConnection();

  System.out.println("");

  System.out.println("Date: " + new Date(con.getDate()));

  System.out.println("Content-Type: " + con.getContentType());

  System.out.println("Expires: " + con.getExpiration());

  System.out.println("Last-Modified: " + new Date(con.getLastModified()));

  int len = con.getContentLength();

  System.out.println("Content-Length: " + len);

  if (len > 0) {

  System.out.println("=== Content ===");

  InputStream input = con.getInputStream();

  int i = len;

  while(((c = input.read()) != -1) && (-i > 0)) {

  System.out.print((char) c);

  }

  input.close();

  }

  else {

  System.out.println("No Content Available");

  }

  }

}

Output of this program:

C:\rose>javac URLInformation.java
C:\rose>java URLInformation

Date: Thu Jan 01 05:30:00 GMT+05:30 1970
Content-Type: null
Expires: 0
Last-Modified: Thu Jan 01 05:30:00 GMT+05:30 1970
Content-Length: -1
No Content Available

C:\rose>

Download of this program.

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