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Objects are typically divided into classes which represent a set of objects specified with a common set of instructions but with different values for information
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One builds up a set of instructions which perform a useful function
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Convert HTML page from English to Chinese or from HTML to Microsoft Word format
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Convert Date/Time from 12 to 24 hour format
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Calculate trajectory of a baseball
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These sets of instructions are called functions, methods or subroutines
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Sets of functions/subroutines/methods(with objects) are called libraries
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In object-oriented languages, methods are associated with objects and are used to manipulate and access information in an object.
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