Question

我正在编写一个将公里数转换为英里数的java程序。我的代码是：

public class Ex7Program {
public void start() {
   String userKilometres;
    double kilometres = getKilometresFromUser(); 
    double miles = convertKilometresToMiles(kilometres);
    printResult(kilometres, miles);
}
private double getKilometresFromUser() { // Insert your 3 methods here.
    System.out.print("Enter kilometres: ");
    String userKilometres = Keyboard.readInput();
    double kilometres = Double.parseDouble(userKilometres);

    return kilometres;

}
private double convertKilometresToMiles(double kilometres) {
    double miles = 0.621371 * kilometres;

    return miles;
}

private void printResult(double kilometes, double miles) {
    System.out.print(kilometres + " Kilometres is " + miles + " miles ");
}
}

我在打印结果的最后一个语句中收到错误，其中显示：

Error: kilometres cannot be resolved to a variable

我花了很长时间尝试修复它，经过多次失败尝试后我决定来这里。我出错的任何建议？帮助将非常感激。

Answer 1

printResult（double，double）的方法参数称为千米，需要将其重命名为千米。

Answer 2

有一个拼写错误。在参数中它是kilometes，你在里面写了kilometres

在两个地方将其更改为kilometres。

private void printResult(double kilometres, double miles) {
    System.out.print(kilometres+ " Kilometres is " + miles + " miles ");
    -------------------^
}

错误：千米无法解析为变量

2 个答案: