Ditch If-Else! Use Map for Clean & Efficient Code (Java Example)”

🚀 Introduction

Tired of messy if-else chains? Let’s replace them with a Map for better readability and performance. just code!

Ditch If-Else! Use Map for Clean & Efficient Code (Java Example)

The Problem: Too Many If-Else Statements

public class DiscountService {
    public static double getDiscount(String customerType) {
        if ("GOLD".equals(customerType)) {
            return 20.0;
        } else if ("SILVER".equals(customerType)) {
            return 10.0;
        } else if ("BRONZE".equals(customerType)) {
            return 5.0;
        } else {
            return 0.0;
        }
    }
}

Too many if-else conditions make code harder to maintain. Let’s simplify it using a Map.

import java.util.Map;

public class DiscountService {
    private static final Map<String, Double> DISCOUNT_MAP = Map.of(
        "GOLD", 20.0,
        "SILVER", 10.0,
        "BRONZE", 5.0
    );

    public static double getDiscount(String customerType) {
        return DISCOUNT_MAP.getOrDefault(customerType, 0.0);
    }
}

🎯 Why This Is Better?

• Cleaner Code — No long if-else chains.
• Better Performance — Constant time lookup (O(1)).
• Easier to Maintain — Just update the map, no code rewrites.

🔥 That’s it! Say goodbye to if-else chains forever! 🚀