how to read pdf file from http url folder in java

1import java.io.FileOutputStream;
2import java.io.IOException;
3import java.io.InputStream;
4import java.net.ConnectException;
5import java.net.URL;
6import java.net.URLConnection;
7
8import com.gnostice.pdfone.PdfDocument;
9
10
11public class Read_PDF_From_URL {
12
13  public static void main(String[] args) throws IOException {
14
15    URL url1 =
16      new URL("http://www.gnostice.com/downloads/Gnostice_PathQuest.pdf");
17
18    byte[] ba1 = new byte[1024];
19    int baLength;
20    FileOutputStream fos1 = new FileOutputStream("download.pdf");
21
22    try {
23      // Contacting the URL
24      System.out.print("Connecting to " + url1.toString() + " ... ");
25      URLConnection urlConn = url1.openConnection();
26
27      // Checking whether the URL contains a PDF
28      if (!urlConn.getContentType().equalsIgnoreCase("application/pdf")) {
29          System.out.println("FAILED.\n[Sorry. This is not a PDF.]");
30      } else {
31        try {
32
33          // Read the PDF from the URL and save to a local file
34          InputStream is1 = url1.openStream();
35          while ((baLength = is1.read(ba1)) != -1) {
36              fos1.write(ba1, 0, baLength);
37          }
38          fos1.flush();
39          fos1.close();
40          is1.close();
41
42          // Load the PDF document and display its page count
43          System.out.print("DONE.\nProcessing the PDF ... ");
44          PdfDocument doc = new PdfDocument();
45          try {
46            doc.load("download.pdf");
47            System.out.println("DONE.\nNumber of pages in the PDF is " +
48                               doc.getPageCount());
49            doc.close();
50          } catch (Exception e) {
51            System.out.println("FAILED.\n[" + e.getMessage() + "]");
52          }
53
54        } catch (ConnectException ce) {
55          System.out.println("FAILED.\n[" + ce.getMessage() + "]\n");
56        }
57      }
58
59    } catch (NullPointerException npe) {
60      System.out.println("FAILED.\n[" + npe.getMessage() + "]\n");
61    }
62  }
63}