Which design pattern is used in the Java InputStream and OutputStream hierarchies?

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Mr. Dubey

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📊 Software Design Modeling (SDM)

Q. Which design pattern is used in the Java InputStream and OutputStream hierarchies?

(A) adapter design pattern
(B) decorator design pattern
(C) composite design pattern
(D) singleton design pattern

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✅ Correct Answer: (B) decorator design pattern

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