java 写文件的三种方法

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import java.io.File;

import java.io.FileOutputStream;

import java.io.*;

public class FileTest {

    public FileTest() {

    }

    public static void main(String[] args) {

        FileOutputStream out = null;

        FileOutputStream outSTr = null;

        BufferedOutputStream Buff=null;

        FileWriter fw = null;

        int count=1000;//写文件行数

        try {

            out = new FileOutputStream(new File(“C:/add.txt”));

            long begin = System.currentTimeMillis();

            for (int i = 0; i < count; i++) {

                out.write(“测试java 文件操作\r\n”.getBytes());

            }

            out.close();

            long end = System.currentTimeMillis();

            System.out.println(“FileOutputStream执行耗时:” + (end - begin) + ” 豪秒”);

            outSTr = new FileOutputStream(new File(“C:/add0.txt”));

             Buff=new BufferedOutputStream(outSTr);

            long begin0 = System.currentTimeMillis();

            for (int i = 0; i < count; i++) {

                Buff.write(“测试java 文件操作\r\n”.getBytes());

            }

            Buff.flush();

            Buff.close();

            long end0 = System.currentTimeMillis();

            System.out.println(“BufferedOutputStream执行耗时:” + (end0 - begin0) + ” 豪秒”);

            fw = new FileWriter(“C:/add2.txt”);

            long begin3 = System.currentTimeMillis();

            for (int i = 0; i < count; i++) {

                fw.write(“测试java 文件操作\r\n”);

            }

                        fw.close();

            long end3 = System.currentTimeMillis();

            System.out.println(“FileWriter执行耗时:” + (end3 - begin3) + ” 豪秒”);

        } catch (Exception e) {

            e.printStackTrace();

        }

        finally {

            try {

                fw.close();

                Buff.close();

                outSTr.close();

                out.close();

            } catch (Exception e) {

                e.printStackTrace();

            }

        }

    }

}