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Which of the following is not an Enterprise Beans type?

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Which of the following is not an Enterprise Beans type? (a) Doubleton (b) Singleton (c) Stateful (d) Stateless I have been asked this question in an online quiz. This is a very interesting question from Java Beans topic in chapter Java Beans & JDBC of Java Select the correct answer from above options

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Right option is (a) Doubleton Explanation: Stateful, Stateless and Singleton are session beans.

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