zxing barcode reader java example Potpourri in Java

Making ECC200 in Java Potpourri

Example
Creating ECC200 In Java
Using Barcode generation for Java Control to generate, create Data Matrix image in Java applications.
Data Matrix 2d Barcode Recognizer In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
The following example puts into action the preceding discussions It first opens a connection to http://HerbSchildtcom (you can use another URL if you like) and then displays the information associated with it Finally, it displays the content
Barcode Generation In Java
Using Barcode drawer for Java Control to generate, create barcode image in Java applications.
Scan Barcode In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
// Demonstrate HttpURLConnection import javanet*; import javaio*; import javautil*;
Drawing Data Matrix In C#.NET
Using Barcode creator for .NET Control to generate, create DataMatrix image in .NET framework applications.
Encode Data Matrix ECC200 In .NET Framework
Using Barcode creator for ASP.NET Control to generate, create DataMatrix image in ASP.NET applications.
9:
Data Matrix Creation In .NET
Using Barcode printer for VS .NET Control to generate, create DataMatrix image in VS .NET applications.
ECC200 Generator In VB.NET
Using Barcode printer for Visual Studio .NET Control to generate, create ECC200 image in .NET framework applications.
Potpourri
Code39 Encoder In Java
Using Barcode creator for Java Control to generate, create Code 3 of 9 image in Java applications.
Printing Barcode In Java
Using Barcode encoder for Java Control to generate, create barcode image in Java applications.
class HttpConDemo { public static void main(String args[]) { URL url; HttpURLConnection httpCon; try { // Create a URL url = new URL("http://wwwherbschildtcom"); // Open an HTTP connection using url httpCon = (HttpURLConnection) urlopenConnection(); } catch(MalformedURLException exc) { Systemoutprintln("Invalid URL"); return; } catch(IOException exc) { Systemoutprintln("Error opening connection"); return; } // Display information about the resource, // beginning with the date long date = httpCongetDate(); if(date == 0) Systemoutprintln("No date information"); else Systemoutprintln("Date: " + new Date(date)); // Show the expiration date date = httpCongetExpiration(); if(date == 0) Systemoutprintln("No expiration information"); else Systemoutprintln("Expires: " + new Date(date)); // Show the last-modified date date = httpCongetLastModified(); if(date == 0) Systemoutprintln("No last-modified information"); else Systemoutprintln("Last-Modified: " + new Date(date)); // Show the content type Systemoutprintln("Content-Type: " + httpCongetContentType()); // Show the content length int len = httpCongetContentLength(); if(len == -1) Systemoutprintln("Content length unavailable"); else Systemoutprintln("Content-Length: " + len);
Encoding 1D Barcode In Java
Using Barcode generation for Java Control to generate, create Linear Barcode image in Java applications.
Code-39 Printer In Java
Using Barcode maker for Java Control to generate, create USS Code 39 image in Java applications.
Herb Schildt s Java Prog ramming Cookbook
Print USPS PLANET Barcode In Java
Using Barcode printer for Java Control to generate, create USPS Confirm Service Barcode image in Java applications.
Printing Bar Code In None
Using Barcode drawer for Font Control to generate, create barcode image in Font applications.
// Display request method Systemoutprintln("Request method is " + httpCongetRequestMethod()); try { // Display response code Systemoutprintln("Response code is " + httpCongetResponseCode()); // Display response message Systemoutprintln("Response Message is " + httpCongetResponseMessage()); } catch(IOException exc) { Systemoutprintln("Cannot obtain response info " + "because the connection failed"); return; } // Display header fields Map<String, List<String>> hdrs = httpCongetHeaderFields(); Set<String> hdrKeys = hdrskeySet(); Systemoutprintln("\nHere is the header info:"); // Display the header for(String k : hdrKeys) Systemoutprintln("Key: " + k + " Value: " + hdrsget(k)); // Download and display the content This will be // displayed as text It is not rendered as HTML if(len != 0) { InputStream inStrm; try { // Open a stream to the content inStrm = httpCongetInputStream(); } catch(IOException exc) { Systemoutprintln("Can't open input stream " + exc); return; } Systemoutprintln("\nContent at " + url); try { int ch; // Display the content while(((ch = inStrmread()) != -1)) Systemoutprint((char) ch); } catch(IOException exc) { Systemoutprintln("Error reading content " + exc); }
Creating Barcode In None
Using Barcode creator for Office Word Control to generate, create bar code image in Word applications.
Paint Bar Code In Java
Using Barcode generator for BIRT reports Control to generate, create bar code image in Eclipse BIRT applications.
9:
Bar Code Drawer In Java
Using Barcode printer for Eclipse BIRT Control to generate, create bar code image in BIRT reports applications.
Painting Code 39 Extended In Objective-C
Using Barcode creation for iPad Control to generate, create Code 39 image in iPad applications.
Potpourri
EAN-13 Supplement 5 Creation In Visual Studio .NET
Using Barcode generation for ASP.NET Control to generate, create EAN / UCC - 13 image in ASP.NET applications.
USS Code 39 Maker In VS .NET
Using Barcode maker for ASP.NET Control to generate, create Code 39 Extended image in ASP.NET applications.
try { inStrmclose(); } catch(IOException exc) { Systemoutprintln("Error closing stream " + exc); } } else Systemoutprintln("No content available"); } }
Sample output is shown here (Of course, the output you see will vary over time, or if you use a different URL)
Date: Fri Jun 01 10:02:45 GMT-06:00 2007 No expiration information Last-Modified: Thu Mar 22 11:51:07 GMT-06:00 2007 Content-Type: text/html Content-Length: 9635 Request method is GET Response code is 200 Response Message is OK Here Key: Key: Key: Key: Key: Key: Key: Key: Key: Key: is the header info: Content-Length Value: [9635] Connection Value: [Keep-Alive] ETag Value: ["afae1c-25a3-4602c20b"] Date Value: [Fri, 01 Jun 2007 16:02:45 GMT] Keep-Alive Value: [timeout=5, max=100] Accept-Ranges Value: [bytes] Server Value: [Apache/1337] Content-Type Value: [text/html] Last-Modified Value: [Thu, 22 Mar 2007 17:51:07 GMT] null Value: [HTTP/11 200 OK]
Content at http://wwwherbschildtcom <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <meta http-equiv="Content-Language" content="en-us"> <title>Herb Schildt Home</title>
Options and Alternatives
Java s support of networking is quite extensive, and it is not possible to discuss all of its options in a single recipe However, here are a few things that you may find of interest when using URLConnection and HttpURLConnection
Herb Schildt s Java Prog ramming Cookbook
In addition to getHeaderFields( ), which returns all header fields and values, HttpURLConnection gives you the ability to obtain the value of a specific header field by calling getHeaderField( ) It has two forms The one defined by URLConnection is shown here: String getHeaderField(String eldName) The name of the field (ie, its key) is specified by fieldName The value is returned If the field does not exist, null is returned The second form of getHeaderField( ), which is defined by HttpURLConnection, lets you obtain the value associated with a specific header field by specifying its index This version is shown here: String getHeaderField(int idx) The index of the field is passed in idx The value is returned Null is returned if idx specifies a non-existent field You can obtain a header field key (ie, the name of the field) by calling getHeaderFieldKey( ) on an HttpURLConnection object It is shown here: String getHeaderFieldKey(int idx) The index of the field is passed in idx The key is returned Null is returned if idx specifies a non-existent field In general, header values are returned in their string form However, you can obtain the value of header field as an integer by using getHeaderFieldInt( ), shown next: int getHeaderFieldInt(String eldName, int defaultVal) Here, the name of the field is passed in fieldName and a default value is passed in defaultVal If the value of the specified field is a string that contains an integer, then the int equivalent of the string is returned Otherwise, defaultVal is returned You can obtain an OutputStream that can be used to write to the invoking URLConnection This is done by calling getOutputStream( ), shown here: OutputStream getOutputStream( ) throws IOException It returns an output stream to the connection If the stream cannot be obtained, an IOException is thrown
Copyright © OnBarcode.com . All rights reserved.