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certainly! design patterns are proven solutions to common problems in software design. they are categorized into three main types: creational, structural, and behavioral patterns. below is an informative tutorial on some commonly used design patterns in java, inspired by the teaching style of durga sir.

1. creational patterns

creational design patterns are concerned with the way of creating objects. they help to create objects in a manner suitable to the situation.

a. singleton pattern

the singleton pattern ensures that a class has only one instance and provides a global point of access to it.

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2. structural patterns

structural patterns deal with object composition, ensuring that if one part of a system changes, the entire system doesn’t need to change.

a. adapter pattern

the adapter pattern allows incompatible interfaces to work together. it acts as a bridge between two incompatible interfaces.

*code example:*



3. behavioral patterns

behavioral patterns are all about class's objects communication. they help to define how objects interact in a way that is flexible and reusable.

a. strategy pattern

the strategy pattern defines a family of algorithms, encapsulates each one, and makes them interchangeable. this allows the algorithm to vary independently from clients that use it.

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conclusion

design patterns are essential for building maintainable and scalable software. they provide a common language for developers and can significantly improve the design of your system. the examples above demonstrate key concepts of creational, structural, and behavioral patterns in java. understanding and applying these patterns will enhance your programming skills and help you write more efficient code.

feel free to ask if you have any specific questions about design patterns or need further examples!

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