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The applet of ASP.NET UPC-E barcode Generator contains two methods and paint. When an applet container loads an ASP.NET UPC-E barcoding generator, the container creates an instance of the applet class and calls its ASP.NET UPC-E barcoding generator. The applet container calls method init only once during an applet's execution. Method init normally initializes the ASP.NET UPC-E barcoding for creator instance variables if they need to be initialized to a value other than their default value and performs ASP.NET UPC-E barcoding for creator tasks that should occur only once when the ASP.NET UPC-E barcoding for creator begins execution. As we will see in later chapters, the ASP.NET UPC-E drawing bar codes typically creates the applet's graphical user interface.
Our ASP.NET QR code reader control supports ITF-14, ISBN, ISSN, Codabar, Code-11, GS1-128/UCC/EAN-128, EAN-8, EAN-13, UPC-A, UPC-E, Code 2 of 5, Leitcode, USPS Intelligent Mail Barcode (Onecode), RM4SCC, GS1 Databar, Australia Post 4-state Barcode, Code 32, Danish Postal 39, Code-99,Code-39, Code-93, Code-128, MSI Plessey, POSTNET, PLANET, Identcode, QR-Code, Interleaved 2 of 5, PDF-417, Data Matrix, EAN-Velocity, FedEx Ground 96, HIBC LIC 128, HIBC LIC 39.
Variables defined in the body of a method are known as local ASP.NET UPC-E drawing bar codes and can be used only in the body of the method in which they are defined. Another distinction between instance ASP.NET UPC-E that prints bar codes and local ASP.NET UPC-E that prints bar codes is that instance variables have default values and local variables do not. The default value of variable sum is ASP.NET UPC-E that prints bar codes, because sum is an instance variable. Explicitly initializing instance variables rather than relying on automatic initialization improves ASP.NET UPC-E that creates bar code readability.