遍列出文本文档里的数字并求和
package ceshi;import java.io.BufferedReader;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.File;import java.io.IOException;import java.util.Scanner;public class FileTest {public static void main(String[] args) {Scanner scanner = null; try { scanner = new Scanner(new File("C:\\Documents and Settings\\tliu\\桌面\\dd.txt")); int text = 0; while (scanner.hasNextInt()) { text += scanner.nextInt(); } System.out.println(text); } catch (FileNotFoundException e) { e.printStackTrace(); } finally { scanner.close(); } /*File file = new File("C:\\Documents and Settings\\tliu\\桌面\\dd.txt");if(file.exists()){System.out.println(file.getName()+"是存在的");}elseSystem.out.println(file.getName()+"是不存在的");if(file.isFile()){try{BufferedReader input = new BufferedReader(new FileReader(file));StringBuffer buffer = new StringBuffer();String text = null;while((text = input.readLine()) != null)buffer.append(text+",");String str = buffer.toString();String[] s = str.split(",");int i = 0;for(String k : s){i += Integer.parseInt(k);}System.out.println(i);}catch(IOException e){}}*/}}
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