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Checking internet connectivity in Java
Internet connectivity can be checked using java.net.URL and java.net.URLConnection class. Following are the required steps.
Create a URL object and pass it the URL say Google
Call URL.openConnection() method to get a URLConnection object.
Call URLConnection.connect() method to check the internet connectivity. connect() method opens a communications link to the resource referenced by the passed URL if a connection has not already been established.
Example
import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; import java.net.URLConnection; public class Tester { public static void main(String[] args) { try { URL url = new URL("http://www.google.com"); URLConnection connection = url.openConnection(); connection.connect(); System.out.println("Internet is connected"); } catch (MalformedURLException e) { System.out.println("Internet is not connected"); } catch (IOException e) { System.out.println("Internet is not connected"); } } }
Output
Internet is connected
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