java中查询水果价格
时间: 2023-11-20 09:59:48 浏览: 36
以下是Java中查询水果价格的示例代码:
```java
import java.util.HashMap;
public class FruitManager {
private HashMap<String, Double> fruitMap;
public FruitManager() {
fruitMap = new HashMap<String, Double>();
fruitMap.put("apple", 2.5);
fruitMap.put("banana", 3.0);
fruitMap.put("orange", 2.0);
}
public double getPrice(String fruitName) {
if (fruitMap.containsKey(fruitName)) {
return fruitMap.get(fruitName);
} else {
return -1.0;
}
}
}
// 在其他类中使用FruitManager类
public class Main {
public static void main(String[] args) {
FruitManager manager = new FruitManager();
double price = manager.getPrice("apple");
if (price != -1.0) {
System.out.println("The price of apple is: " + price);
} else {
System.out.println("Sorry, we don't have this fruit.");
}
}
}
```