io流文本文档的快速读取

package com.ute.action; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; /**  *   * @author Administrator  * 文本文档的快速读取  */ public class action { public static void main(String[] args) { Long start=System.currentTimeMillis(); action.teIO();

Long end=System.currentTimeMillis();

System.out.print("用时");

System.out.println(end-start); } public static void teIO(){ //通过反射的方式获取流对象 File file1 = new File(action.class.getResource("utest.txt").getFile()); System.out.println("文件是否存在测试:"+file1.exists());//true FileReader fr = null; try { fr= new FileReader(file1); //修改每次读取的个数，一般为2进制递进64-128-256-512-1024 char [] c=new char[64]; while (fr.read(c) != -1) { System.out.println(c); } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }finally { try { //关闭读取流 fr.close(); } catch (IOException e) { e.printStackTrace(); } } } }