我想問爲什麼我得到一個InputMismathException
?InputMismatchException
我已宣佈double
類型的變量,當我分配給它一個點的值,例如(4.6)它拋出我:
Exception in thread "main" java.util.InputMismatchException
at java.util.Scanner.throwFor(Scanner.java:909)
at java.util.Scanner.next(Scanner.java:1530)
at java.util.Scanner.nextDouble(Scanner.java:2456)
at Exercises.ComputingMeanAndStandartDeviation_5_21.main(ComputingMeanAndStandartDeviation_5_21.java:18)
下面是代碼:
package Exercises;
import java.util.*;
public class ComputingMeanAndStandartDeviation_5_21
{
public static void main(String[] args)
{
Scanner input = new Scanner(System.in);
double sum = 0;
double number = 1;
double counter = 1;
System.out.println("Enter ten numbers: ");
while(counter<10)
{
number = input.nextDouble();
sum +=number;
counter ++;
}
System.out.println(sum + " " + number + " " + counter);
double mean = sum/counter;
System.out.println("The mean is: " + mean);
}
}
您的輸入是什麼? – nhahtdh 2012-07-20 16:56:07
你'Scanner'對象期待閱讀'double',但實際上是看到的東西,你不能轉換成'double' – 2012-07-20 16:56:24
對於下面的輸入 – 2012-07-20 16:57:17