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jpgtutorials.comData Access Object Design Pattern in J2EE. Data access object (DAO) pattern is one of the core J2EE patterns used in many enterprise level applications. It provides a clean separation for various methods of data access and central point of access to data source. Factory Design Pattern in Java. Factory method is a creational design pattern widely used in many libraries and toolkits. It provides a unified interface to instantiate appropriate sub classes at runtime based on specific conditions. Congratulati...
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