使用用户输入Java的平均计算器-“java.util.NoSuchElementException:找不到行”
使用用户输入Java的平均计算器-“java.util.NoSuchElementException:找不到行”
提问于 2021-04-01 12:39:15
我正在使用Eclipse上的用户输入创建一个简单的平均计算器，并收到以下错误：“java.util.NoSuchElementException: No line found”
String input = sc.nextLine();此外，我认为还会有后续错误，因为我不确定是否可以使用两个变量string和float作为用户输入。
import java.util.Scanner;
public class AverageCalculator {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter the numbers you would like to average. Enter \"done\"");
String input = sc.nextLine();
float num = sc.nextFloat();
float sum = 0;
int counter = 0;
float average = 0;
while(input != "done"){
sum += num;
counter ++;
average = sum / counter;
}
System.out.println("The average of the "+ counter + " numbers you entered is " + average);
}
}非常感谢：)
Stack Overflow用户
发布于 2021-04-01 14:42:15
import java.util.Scanner;
public class AverageCalculator {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.println("Enter the numbers you would like to average. Enter \"done\" at end : ");
String input = scanner.nextLine();
float num = 0;
float sum = 0;
int counter = 0;
float average = 0;
while(!"done".equals(input)){
num = Float.parseFloat(input); // parse inside loop if its float value
sum += num;
counter ++;
average = sum / counter;
input = scanner.nextLine(); // get next input at the end
}
System.out.println("The average of the "+ counter + " numbers you entered is " + average);
}
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/66898510
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