What is the Strategy Pattern in Java?

Can you explain the Strategy Pattern in Java?

Sure! The Strategy Pattern is a behavioral design pattern that enables selecting an algorithm's behavior at runtime.

How does it differ from other design patterns?

Unlike other patterns, the Strategy Pattern focuses on defining a family of algorithms, encapsulating each one, and making them interchangeable.

Can you give me a code example?

Absolutely! Here's a simple example:

interface Strategy {
    int doOperation(int num1, int num2);
}

class Add implements Strategy {
    public int doOperation(int num1, int num2) {
        return num1 + num2;
    }
}

class Context {
    private Strategy strategy;

    public Context(Strategy strategy) {
        this.strategy = strategy;
    }

    public int executeStrategy(int num1, int num2) {
        return strategy.doOperation(num1, num2);
    }
}

This code defines a Strategy interface and a concrete implementation for addition.

What are some real-world applications of the Strategy Pattern?

It's commonly used in sorting algorithms, payment processing systems, and any scenario where multiple algorithms can be applied.