Question

Exception in thread "main" java.lang.IllegalStateException: Scanner closed at 1070,1334. Java returned 1

此代码从项目文件夹中的Course.txt文件中读取，并且在开始阅读文本之前（在完成第一行之前），它具有此异常错误。我迷路了，因为这是我第一次为此创建Java程序。

我在netbeans上没有检查过两次错误，也没有尝试，并且尝试删除和替换代码的某些区域也没有成功。

package u2a1_readtextfilehandleexcep;

import java.util.Scanner;
import java.io.IOException;
//@author jeff thurston
public class U2A1_ReadTextFileHandleExcep {


public static void main(String[] args) throws Exception {
    // TODO code application logic here
System.out.println("U2A1 Java Read Text File");

try 
    { 
    java.io.File file1 = new java.io.File("Course.txt");

Scanner input = new Scanner(file1);
while (input.hasNext())
  {
    String coursecode = input.next();
      int coursehours = input.nextInt();
     String coursetitle = input.next();
System.out.println ("Course code =  " + coursecode + " - 
Credit Hours = " + coursehours + " - " + "Course Title = " + 
coursetitle);
input.close();
  }
    }
catch (IOException e)
  {
 System.out.println ("Error in reading the file" + 
e.getMessage()); 
    }
}
}

它应如下运行：

U2A1 Java Read Text File
Course code = IT2249 - Credit Hours = 6 - Course Title = Introduction to Programming with Java
Course code = IT2230 - Credit Hours = 3 - Course Title = Introduction to Database Systems
Course code = IT4789 - Credit Hours = 3 - Course Title = Mobile Cloud Computing Application Development

但是第一行Course Title = Introduction之后是系统停止产生输出的位置。

java.lang.IllegalStateException：扫描程序因Java赋值而关闭错误

0 个答案: