Link checker in java

Link is most commonly used content of any website. Link will get you from one website to another website. But if link is broken in website, it get bad impression to user. We can check link by java.net package. We even can get HTTP error status code e.g. 404 page not found, 200 page is OK.

I have a code for link checker in java which can check all links and exception errors. It will find broken links in java with HttpURLConnection.

Example will explain about using link checker script in JSP 

<%@ page language="java"  import="java.net.*"%>
<html>
<head>
<title>Link checker in java and get link status code</title>
</head>
<body>
<%

    int code=0;
    
    try{
        URL url = new URL("http://easywayserver.com/");

        HttpURLConnection link=(HttpURLConnection)url.openConnection();
        code=link.getResponseCode();
    }
    catch(BindException e)
    {
        code=1;
        e.printStackTrace();
    }
    catch(ConnectException e)
    {
        code=2;
        e.printStackTrace();
    }
    catch(HttpRetryException e)
    {
        code=3;
        e.printStackTrace();
    }
    catch(MalformedURLException e)
    {
        code=4;
        e.printStackTrace();
    }
    catch(NoRouteToHostException e)
    {
        code=5;
        e.printStackTrace();
    }
    catch(PortUnreachableException e)
    {
        code=6;
        e.printStackTrace();
    }
    catch(ProtocolException e)
    {
        code=7;
        e.printStackTrace();
    }
    catch(SocketException e)
    {
        code=8;
        e.printStackTrace();
    }
    catch(SocketTimeoutException e)
    {
        code=9;
        e.printStackTrace();
    }
    catch(UnknownHostException e)
    {
        code=10;
        e.printStackTrace();
    }
    catch(UnknownServiceException e)
    {
        code=11;
        e.printStackTrace();
    }
    
    
out.println("Code ....................."+code);

%>

</body>
</html>
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