Question

我在Lynda.com上在线学习Java，我们应该做的是创建一个Car Object。以下是Car类的代码：

import java.awt.*; // abstract window toolkit library


public class Car {

double avgMilesPerGallon;
String licensePlate;
Color paintColor;
boolean lightsWorking;

// Constructor
    public Car(double inputAverageMPG, String inputLicensePlate, 
            Color inputPaintColor, boolean inputTaillightsWorking ) {
        this.avgMilesPerGallon = inputAverageMPG;
        this.licensePlate = inputLicensePlate;
        this.paintColor = inputPaintColor;
        this.lightsWorking = inputTaillightsWorking;

    } 

    }

这是我的Main类的代码（我把它命名为CrimsonPeak）：

import java.awt.*;

public class CrimsonPeak {
 public static void main(String[] args) {



     Car myCar = new Car( inputAverageMPG: 25.5, inputLicensePlate: "1BC32E",
             inputPaintColor: Color.BLUE, inputTaillightsWorking: true);

     Car erikaCar = new Car( inputAverageMPG: 13.9, inputLicensePlate: "3D20CE", 
             Color.BLACK, inputTaillightsWorking: false);




 }

}

我正在关注Lynda.com上的视频向我展示的所有内容，但我仍然遇到以下错误：

Exception in thread "main" java.lang.Error: Unresolved compilation problems: 
inputAverageMPG cannot be resolved to a variable
Syntax error on token ":", invalid AssignmentOperator
inputLicensePlate cannot be resolved to a variable
Syntax error on token ":", invalid AssignmentOperator
inputPaintColor cannot be resolved
Syntax error on token ":", :: expected
inputTaillightsWorking cannot be resolved to a variable
Syntax error on token ":", invalid AssignmentOperator
inputAverageMPG cannot be resolved to a variable
Syntax error on token ":", invalid AssignmentOperator
inputLicensePlate cannot be resolved to a variable
Syntax error on token ":", invalid AssignmentOperator
Color cannot be resolved to a variable
inputTaillightsWorking cannot be resolved to a variable
Syntax error on token ":", invalid AssignmentOperator
at CrimsonPeak.main(CrimsonPeak.java:11)

我是否知道如何解决上述错误？我试图从Lynda.com的视频中理解它，但我似乎无法找到导致错误的原因。

此外，Lynda.com上的视频展示了上述代码在Intellij IDEA 2017上的演练。这也是我在Eclipse上遇到上述错误的原因吗？

感谢您的帮助！

Answer 1

创建汽车时，您不必执行inputAverageMPG: 25.5, inputLicensePlate: "1BC32E"，依此类推。它只是25.5,"1BC32E"。删除构造函数中的inputAverageMPG:，inputLicensePlate:和其他任何位置。

Car myCar = new Car(25.5,"1BC32E", Color.BLUE, true);

Car erikaCar = new Car(13.9, "3D20CE", Color.BLACK, false);

看起来应该是这样的。如果Lynda.com上的教程告诉你把它们放在那里，找一个不同的网站。

创建实例Java时Eclipse中的错误

1 个答案: