在 intellij Idea 中找不到符號

Question

汽車.java文件

public class Car {
    String model;
    int year;
    int price;
    String color;

    public Car(String model, int year, int price, String color) {
        this.model = model;
        this.year = year;
        this.price = price;
        this.color = color;
    }

    @Override
    public String toString() {
        return "Car{" +
                "model='" + model + '\'' +
                ", year=" + year +
                ", price=" + price +
                ", color='" + color + '\'' +
                '}';
    }
}

CarManager.java 文件

public class CarManager {

    public static void main(String[] args) {

        Car bmw = new Car("m5", 2020, 50000, "black");
        Car rr = new Car("sport", 2019, 70000, "white");

        System.out.println(bmw);
        System.out.println(rr);
    }
} 

錯誤：

 error: compilation failed CarManager.java:7: error: cannot find symbol Car bmw = new Car("m5", 2020, 50000, "black"); ^ symbol: class Car location: class CarManager CarManager.java:7: error: cannot find symbol Car bmw = new Car("m5", 2020, 50000, "black"); ^ symbol: class Car location: class CarManager CarManager.java:8: error: cannot find symbol. Error cannot find symbol.

您認為問題可能來自 IDEA 嗎？

Answer 1

這里有 2 個可能的選項可以使此代碼正常工作。

1. 將 Car.java 和 CarManager.java 放在同一個 package 中。

或者

2. 在 CarManager.java 中導入 class 汽車