仔细看还是不太难的！
package demo2;
import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.io.InputStreamReader;public class wc { public void wcexe() throws IOException{ String filepath="C:/Users/Administrator/Desktop/123.txt";//文件路径 BufferedReader br =null; int countWord=0; int countChar=0; int countLine=0; String s=""; String strCount=""; try { br = new BufferedReader(new InputStreamReader(new FileInputStream(new File(filepath)))); while((s=br.readLine())!=null) { s=s+" "; strCount+=s; countLine++; } for(int i=0;i<strCount.split(" ").length;i++){ if(!strCount.split(" ")[i].equals(" ")) countWord++; countChar+= strCount.split(" ")[i].length(); } System.out.println("单词数："+countWord); System.out.println("字符数："+countChar); System.out.println("行数："+countLine); } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); }finally{ br.close(); } } public static void main(String[] args) throws IOException{ wc w=new wc(); w.wcexe(); }}原文：http://www.cnblogs.com/7inkoo/p/7571769.html