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We can define wrapper as a data that give direction and frame the main data, and framed data is setup for the program or required in the program so that we can run that program successfully. Sometimes this technique seems on internet where “http://”and “ftp://” descried as wrapper that wrap the internet address that URL follow. By help the help of bracketing symbols the technique is to be used on internet. If we talk about programming it is a program or a script that combined with another program and make them possible to run successfully. It also helps in data transmission, wraps the data that provide information and also encapsulate it so that it can view by intended recipient. To encapsulate the data wrapper consist of a header that precedes the data and trailer that follow it. The advantage of the wrapper vary with the different technology. Basically wrapper used in the situation where primitive data type is not allowed, so a wrapper class can provide many utility methods also.
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