Keeping a counter for execution of java application
<p>Here is the scenario:</p>

<p>I am running a Java Application which makes a call to REST interface, and gets back some states of variables as integers (Basically LAST Successful Build # form Teamcity)</p>

<p>Now, since i am running the utility from Jenkins, i want to compare the LastSuccessfulBuild Number between two REST Calls. What is the Best way to do this ? Here is what i have in terms of code.</p>

<pre><code>import java.io.File;
import java.io.FileInputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Properties;
import java.util.TimeZone;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.ClientResponse;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.api.client.filter.HTTPBasicAuthFilter;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.io.FileUtils;

public class LastSuccessBuildNum {

    private  final static String getDateTime()
    {
        DateFormat df = new SimpleDateFormat("yyyy-MM-dd_hh:mm:ss");
        df.setTimeZone(TimeZone.getTimeZone("EST"));
        return df.format(new Date());
    }

    public static void main(String[] args) {

        try {

            Client client = Client.create();
            Properties properties = new Properties();
            File f = File.createTempFile("default", ".properties");

            properties.load(new FileInputStream("config.properties"));

            String currentDir = System.getProperty("user.dir");


            String username = properties.getProperty("username");

            String pass = properties.getProperty("password");
            //System.out.println(pass);
            String buildNumber = properties.getProperty("buildNumber");


            client.addFilter(new HTTPBasicAuthFilter("username", "password"));

            WebResource webResource = client
                    .resource("http://a.b.c.d/teamcity/app/rest/buildTypes/id:bt26/builds/status:SUCCESS/number");
            ClientResponse response = webResource.accept("text/plain").get(
                    ClientResponse.class);

            if (response.getStatus() != 200) {
                throw new RuntimeException("Failed : HTTP error code : "
                        + response.getStatus());
            }

            /**
             * Prepend timestamp to latestBuildNum
             */

            System.out.println(getDateTime());
            String latestBuildNum_1 = response.getEntity(String.class);

            //System.out.println("Output from Server .... \n");

            /** 
             * Save latest build number to a local file
             */
            //System.out.println(latestBuildNum);

            String datelbn = (getDateTime() + "-" + latestBuildNum_1);
            //System.out.println(datelbn);
            //If latestBuildNumberLocal &lt; latestBuildNum, then save to file latestBuildNum
            // Else do nothing
            FileUtils.writeStringToFile(new File("PreMDNSlatestSuccBuildNum.txt"), latestBuildNum_1);
            /**
             * Get Content from the file, which would be the LatestBuildNumber at LAST run.
             * SO the NEXT run, will save the number in a different file.
             * Then we compare the contents of these two files
             * using StringToInt() and compare
             */

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}
</code></pre>
