获取错误-'；java：未报告的异常java.io.FileNotFoundException；必须被抓住或宣布被抛出'；

导入java.util。； 导入java.io

公共班机{ 公共静态void main（字符串参数[]）{

---

}

在阅读文件的过程中，使用

try catch

，示例代码如下：

import java.util.*;
import java.io.*;

public class Main {
    public static void main(String args[]){

        try {
            int total = 0;

            File file = new File("expenditure.txt");
            Scanner fileScanner = new Scanner(file);

            while (fileScanner.hasNextLine()) {
                total += fileScanner.nextInt();
            }
            fileScanner.close();

            System.out.println("The total expenditure is " + total);
        } catch (FileNotFoundException ex){
            System.out.println("File not found");
        }
    }
}

可能的重复项和Java教程：

import java.util.*;
import java.io.*;

public class Main {
    public static void main(String args[]){

        try {
            int total = 0;

            File file = new File("expenditure.txt");
            Scanner fileScanner = new Scanner(file);

            while (fileScanner.hasNextLine()) {
                total += fileScanner.nextInt();
            }
            fileScanner.close();

            System.out.println("The total expenditure is " + total);
        } catch (FileNotFoundException ex){
            System.out.println("File not found");
        }
    }
}