addnumber.java

此程序为java查找文档,统计给定文件中包含的每个单词出现的频率

/*创建程序从标准输入读入文本，在每行前加入行号后写入文件中。文件名用命令行参数指定*/

import java.io.*;

public class AddNumber{
	public static void main(String[] args){
		int i=1;
		String s;
		
		BufferedReader in=new BufferedReader(
			new InputStreamReader(System.in));
			
		File myFile=new File("add1.txt");
		
			System.out.println("Please input strings:");
			
			try{	
			      /*BufferedWriter out=new BufferedWriter(
			      	new FileWriter("add1.txt"));*/
			  PrintWriter out=new PrintWriter(myFile);
			      
				  s=in.readLine();
				while(!s.equals("exit"))
				{
				 out.print(i+":");
				 out.println(s);
				 s=in.readLine();
				 i++;
				 }
				in.close();
				out.close();
			}catch(IOException e){
				e.printStackTrace();
			}
		}
	
}