从标准输入流中读取数据，并存储到文件中

import java.io.BufferedReader;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.io.InputStreamReader;

import java.io.PrintWriter;

/**

 * 从标准输入流中读取数据，并存储到文件中

 */

public class CatStdinToFile {

 

    public static boolean catStdinToFile(String fileName){

        File file = new File(fileName);

        //将数据按照文本输出到文件

        PrintWriter writer = null;

        BufferedReader in = null;

        try {

            //为输出文件建立一个写入器

            writer = new PrintWriter(new FileWriter(file));

            System.out.println("请输入文件内容，输入quit结束");

            //用BufferedReader包装标准输入流

            in = new BufferedReader(new InputStreamReader(System.in));

            String inputLine = null;

            while (((inputLine = in.readLine( )) != null) && (!inputLine.equals("quit"))) {

                writer.println(inputLine);

            }

            //如果采用new PrintWriter(new FileWriter(file), true)则会自动flush。

            writer.flush();

            writer.close();

            return true;

        } catch (IOException e) {

            System.out.println(e.getMessage());

            return false;

        } finally {

            if (in != null){

                try {

                    in.close();

                } catch (IOException e) {

                    e.printStackTrace();

                }

            }

        }

    }

 

    public static void main(String[] args) {

        String fileName = "C:/temp/temp.java";

        CatStdinToFile.catStdinToFile(fileName);

        System.out.println();

        System.out.println("输出文件的内容：");

        ReadFromFile.readFileByLines(fileName);

    }

}