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Report generation in java language

Below I present a simple program showing how java program can generate a report using the system ProReports:

import java.net.*;
import java.io.*;

class getREPO {
    public static void main(String[] args) {
       String url="";
       String file="";
       if (args.length != 2) 
       {
            System.out.println("Usage:");
            System.out.println("java getREPO <file> <ProRepoURL> ");
            return; 
       }  
       else
       {
         file=args[0] ; 
         url=args[1]  ; 
       }   

        try {
            URL proreports = new URL(url);
            URLConnection proConn = proreports.openConnection();
            //proConn.setReadTimeOut(30000);
            //proConn.setConnectTimeout(30000);
            //System.out.println(proConn.getReadTimeOut());
            DataInputStream dis = new DataInputStream(proConn.getInputStream());
            ByteArrayOutputStream bais = new ByteArrayOutputStream(); 

            byte[] byteChunk = new byte[4096];  
            int n; 
            while ( (n = dis.read(byteChunk)) > 0 ) { 
               bais.write(byteChunk, 0, n); 
             } 
            OutputStream os = new FileOutputStream (file); 
            bais.writeTo(os);

            dis.close();
        } catch (MalformedURLException me) {
            System.out.println("MalformedURLException: " + me);
        } catch (IOException ioe) {
            System.out.println("IOException: " + ioe);
        }
    }
}