我正在建立一个简单的月份计划。我在其他任务中设置了扫描仪,但扫描仪这次没有工作。我遇到了多个我不理解的错误。
我已经复制并粘贴了其他任务,我没有收到他们的错误,而且非常简单,所以我看不出有什么东西搞砸了。
import java.util.Scanner;
public class H3_ken {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int month;
int year;
System.out.println("Enter what month you would like to look up: ");
month = input.nextInt();
System.out.println("Enter what year: ");
year = input.nextInt();
System.out.println("You have chosen to look up the month of " + month + " in the year of " + year + ".");
}
}
这是进入月份的输出。
Enter what month you would like to look up:
January
Exception in thread "main" java.util.InputMismatchException
at java.base/java.util.Scanner.throwFor(Scanner.java:939)
at java.base/java.util.Scanner.next(Scanner.java:1594)
at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
at H3_ken.main(H3_ken.java:12)
如果您确实想要输入1月,则需要一个字符串
String month = input.nextLine();
如果输入两个由至少一个空格分隔的int值,则此代码可正常工作!
可能你有年和月之间的符号(除了空间)