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1   ÊäÈëÊä³ö
  javaµÄ¿â½«³ÌÐòÓëÊäÈëÓйصÄÀà¶¼´ÓInputStream¼Ì³Ð£¬ÓëÊä³öÓйصÄÀà¶¼´ÓOutStream¼Ì³Ð¡£
ÒÔǰûÓÐÕÆÎÕµÄÏà¹ØÀà  SequenceInputStream ½«Á½¸ö»ò¸ü¶àµÄinputStream ת»»³Éµ¥¸ö¶ÔÏóʹÓá£
2 ÔöÌíÊôÐÔºÍÓÐÓõĽӿÚ
×°ÊÎÆ÷ £º ÀûÓòã´Î»¯¶ÔÏó¶¯Ì¬Í¸Ã÷µÄÔö¼Óµ¥¸ö¶ÔÏóµÄÄÜÁ¦µÄ×ö·¨½Ð×ö“×°ÊÎÆ÷” 
3 ÊäÈë
¶ÔÒ»¸öÎļþ½øÐÐÊäÈë²Ù×÷£¬ÐèÒªÒ»¸öFileInputStream ¶ÔÏó£¬ÎªÌá¸ßËÙ¶ÈÐèÒª¶ÔÎļþ½øÐлº³å´¦Àí BufferedInputStream  £¬ÎªÁËÒÔ¸ñʽ»¯µÄÐÎʽ¶ÁÈ¡Êý¾Ý£¬ÎÒÃÇʹÓÃÁËDataInputStream À´½øÐд¦Àí¡£ 
DataInputStream in = new DataInputStream(new BufferedInputStream(new FileInputStream(args[0]))); 
4 ¿ìËÙÎļþÊäÈë
class InFile extends DataInputStream {

public InFile(String fileName) throws FileNotFoundException{
super(new BufferedInputStream(new FileInputStream(fileName)));
}

public InFile(File file) throws FileNotFoundException{
super(new BufferedInputStream(new FileInputStream(file.getPath())));
}
}
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5 Reader Writer 
inputstream ÊÇ×Ö½ÚÁ÷ £¬¶þreaderÊÇ×Ö·ûÁ÷ ´«µÝunicode ¡£
ҪʹÓÃreadLine()Ó¦¸ÃʹÓÃBufferedReader ,¶þ²»Ó¦¸ÃÔÙʹÓÃDataInputStream 
6 ÖØµ¼Ïò±ê×¼IO package cn.bupt.io;
import java.io.*;
public class Redirect {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
BufferedInputStream in = null ;
try {
in = new BufferedInputStream(new FileInputStream(args[0]));
} catch (FileNotFoundException e) {
e.printStackTrace();
}
PrintStream out = null ;

try {
out = new PrintStream(new BufferedOutputStream(new FileOutputStream(args[1]))) ;
} catch (FileNotFoundException e) {
e.printStackTrace();
}


System.setIn(in) ;
System.setOut(out) ;
System.setErr(out) ;


BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String s = null ;
try {
whil


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