java 写文件的三种方法比较

原文：http://www.cnblogs.com/yezhenhan/archive/2012/09/10/2678690.html

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(); } } } }