对比 switch 和 if 处理逻辑的代码清晰度

TestSwitch.java

import static com.utils.TestSwitch.Fruit.*;

/**
 * Created by Pelin on 17/2/20.
 */
public class TestSwitch {

    enum Fruit {
        APPLE, BANANA, POTATO
    }

    public static void main(String[] args) {
        Fruit fruit = POTATO;
        testSwitch(fruit);
        testIf(fruit);
    }

    private static void testSwitch(Fruit fruit) {
        switch (fruit) {
            case APPLE: {
                System.out.println("我拿到了苹果");
                // 接下来是业务逻辑
                break;
            }
            case BANANA: {
                System.out.println("我拿到了香蕉");
                // 接下来是业务逻辑
                break;
            }
            case POTATO: {
                System.out.println("我拿到了土豆");
                // 接下来是业务逻辑
                break;
            }
            default: {}
        }
    }

    private static void testIf(Fruit fruit) {
        if (fruit.equals(APPLE)) {
            System.out.println("我拿到了苹果");
            // 接下来是业务逻辑
        } else if(fruit.equals(BANANA)) {
            System.out.println("我拿到了香蕉");
            // 接下来是业务逻辑
        } else if (fruit.equals(POTATO)) {
            System.out.println("我拿到了土豆");
            // 接下来是业务逻辑
        }
    }
}