Java写入文件的几种方法及性能对比

package demo;
import java.io.File;   
import java.io.FileOutputStream;   
import java.io.*;   

public class FileOperate {   

    public static void main(String[] args) {   

        FileOutputStream out = null;   
        FileOutputStream outSTr = null;   
        BufferedOutputStream Buff=null;   
        FileWriter fw = null;   
        int count=50000;//写文件行数   

        try {   
            //****************************FileOutputStream保存**************************************
            out = new FileOutputStream(new File("E:/add0.html"));   
            long begin = System.currentTimeMillis();   
            for (int i = 0; i < count; i++) {   
                out.write("测试java 文件操作".getBytes());   
            }   
            out.close();   
            long end = System.currentTimeMillis();   
            System.out.println("FileOutputStream执行耗时:" + (end - begin) + " 豪秒");   
            
            //****************************BufferedOutputStream保存***********************************
            outSTr = new FileOutputStream(new File("E:/add1.html"));   
             Buff=new BufferedOutputStream(outSTr);   
            long begin0 = System.currentTimeMillis();   
            for (int i = 0; i < count; i++) {   
                Buff.write("测试java 文件操作".getBytes());   
            }   
            Buff.flush();   
            Buff.close();   
            long end0 = System.currentTimeMillis();   
            System.out.println("BufferedOutputStream执行耗时:" + (end0 - begin0) + " 豪秒");   

            //****************************fileWriter保存*********************************************
            fw = new FileWriter("E:/add2.html");   
            long begin3 = System.currentTimeMillis();   
            for (int i = 0; i < count; i++) {   
                fw.write("测试java 文件操作");   
            }   
            fw.close();   
            long end3 = System.currentTimeMillis();   
            System.out.println("FileWriter执行耗时:" + (end3 - begin3) + " 豪秒");   
            
            //****************************outPutStreamWriter保存**************************************
            FileOutputStream os = new FileOutputStream(new File("E:/add3.html"));
            OutputStreamWriter osWriter = new OutputStreamWriter(os, "UTF-8");
            long begin4 = System.currentTimeMillis();  
            for (int i = 0; i < count; i++) {
                osWriter.write("测试java 文件操作");
            }
            osWriter.close();
            long end4 = System.currentTimeMillis();   
            os.close();
            System.out.println("outPutStreamWriter执行耗时:" + (end4 - begin4) + " 豪秒");  
            
            FileWriter fileWritter = new FileWriter(new File("E:/add4.html"));
            BufferedWriter bufferWritter = new BufferedWriter(fileWritter);
            long begin5 = System.currentTimeMillis();
            for (int i = 0; i < count; i++) {
            bufferWritter.write("测试java 文件操作");
            }
            bufferWritter.close();
            long end5 = System.currentTimeMillis();   
            System.out.println("BufferedWriter执行耗时:" + (end5 - begin5) + " 豪秒");
        } catch (Exception e) {   
            e.printStackTrace();   
        } finally {   
            try {   
                fw.close();   
                Buff.close();   
                outSTr.close();   
                out.close();   
            } catch (Exception e) {   
                e.printStackTrace();   
            }   
        }   
    }   

}