SOFTWARE DESIGN
DESIGN PATTERNS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which statement is correct regarding the State pattern?
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Allows an object to alter its behaviour when its internal state changes
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Allows (a group of) objects to be notified when some state changes
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Changes the interface of one or more classes.
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Simplifies the interface of a group of classes.
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Explanation:
Detailed explanation-1: -In State pattern a class behavior changes based on its state. This type of design pattern comes under behavior pattern. In State pattern, we create objects which represent various states and a context object whose behavior varies as its state object changes.
Detailed explanation-2: -The State pattern allows an object to change its behavior when its internal state changes. This pattern can be observed in a vending machine.
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