如何在Java中更改很多if/else类应该返回的地方

public interface Strategy {
    void execute();
}

public class StrategyA implements Strategy {
    @Override
    public void execute() {
        // 执行策略A的逻辑
    }
}

public class StrategyB implements Strategy {
    @Override
    public void execute() {
        // 执行策略B的逻辑
    }
}

// 其他策略类...

public class Context {
    private Strategy strategy;

    public void setStrategy(Strategy strategy) {
        this.strategy = strategy;
    }

    public void executeStrategy() {
        strategy.execute();
    }
}

public class Main {
    public static void main(String[] args) {
        Context context = new Context();

        // 根据需要设置具体的策略
        context.setStrategy(new StrategyA());
        context.executeStrategy();

        // 根据需要设置其他策略
        context.setStrategy(new StrategyB());
        context.executeStrategy();
    }
}