0
import java.util.Scanner;
public class Unit1Err1{
public static void main(String[] args) {
Scanner inPut = new Scanner(System.in);
String sName = inPut.nextLine();
double gpa = inPut.nextDouble();
int noOfCourses = inPut.nextInt();
System.out.printf("%11s %18s %12s","Name","GPA","No Of Courses");
System.out.println();
System.out.printf("%11s %18s %12s",sName,gpa,noOfCourses);
System.out.println();
sName = inPut.nextLine();
gpa = inPut.nextDouble();
noOfCourses = inPut.nextInt();
System.out.printf("%11s %18s %12s",sName,gpa,noOfCourses);
System.out.println();
sName = inPut.nextLine();
gpa = inPut.nextDouble();
noOfCourses = inPut.nextInt();
System.out.printf("%11s %18s %12s",sName,gpa,noOfCourses);
System.out.println();
}
}
這說明了是錯誤:錯誤:inputMismatchException?
CompileRunTest: throwable = java.util.InputMismatchException
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 Unit1Err1.main(Unit1Err1.java:13)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at tester.TesterThread.invokeMain(TesterThread.java:32)
at tester.TesterThread.run(TesterThread.java:38)
我已閱讀,這是錯誤很可能是由於試圖輸入到一個變量類型,它不是一個值。但我的輸入是:
恆鵬
3.5
禪本
2.8
傑裏·貝瑞
4.0
,除非它的一個簡單的錯誤,我相信我擁有了一切正確爲止。任何幫助都將不勝感激,
注:此標記爲重複的,但我也做了另外一個向人們展示了,它仍然還沒有上班
這是我插入input.nextLine的示例: int noOfCourses = inPut.nextInt(); input.nextLine(); System.out.printf(「%14s%12s%18s」,「Name」,「GPA」,「No Of Courses」); 這是我得到的錯誤: 1. [File:/Unit1Err1.java Line:8,Column:1]找不到符號符號:變量輸入位置:class Unit1Err1 – DinoMeme
您的掃描儀對象被命名爲「inPut」,但您用「輸入」調用nextLine方法。因爲沒有這樣的事情,所以編譯器找不到它。 –