我的下一个双打();扫描仪给我一个"cannott find symbol"错误

Question

我正在为我的计算机科学课做一个项目，遇到了一个无法继续的问题，我试图做一个非常简单的用户输入问题，但我一直遇到错误。这是我的代码和错误：

import java.util.*;
public class BeekeepingIncome{
public static void main(String [] args)
{
double rawHoney;
double honeyCombs; 
double rent = 534.99;

Scanner scanner = new Scanner(System.in);

System.out.println("How much honey in pounds was purchased?");
rawHoney = nextdouble();
System.out.println("How many honey combs in pounds were purchased?");




}

}
BeekeepingIncome.java:20: error: cannot find symbol
rawHoney = nextDouble();
^
symbol:   method nextDouble()
location: class BeekeepingIncome
1 error

有什么办法我能解决的吗？

Answer 1

您需要使用Scanner:

rawHoney = scanner.nextDouble();

https://www.w3schools.com/java/java_user_input.asp

https://docs.oracle.com/javase/7/docs/api/java/util/Scanner.html