Java使用流读入字符,正确输出读入的字符.

使用流读入字符,正确输出读入的字符.




/** *//**


* $Id:$


*


* Copyright 2005 easou, Inc. All Rights Reserved.


*/


package say;




import java.io.BufferedInputStream;


import java.io.BufferedOutputStream;


import java.io.IOException;


import java.io.FileInputStream;


import java.io.FileWriter;


import java.io.StringReader;


import java.io.StringWriter;


import java.io.BufferedReader;


import java.io.BufferedWriter;


import java.io.ByteArrayInputStream;






/** *//**


*


* @author sai


*


*/




public class TestFile ...{






public static void main(String[] args) ...{


TestFile tt = new TestFile();


tt.testStreamBuffer();


tt.testCharBuffer();


}






/** *//**


* 读stream,不适合读双字节字符


*


*/




public void testStreamBuffer() ...{


BufferedOutputStream bo = new BufferedOutputStream(System.out);




try ...{


byte[] str = (new String("abcdefghijklmn")).getBytes();


ByteArrayInputStream ba = new ByteArrayInputStream(str);




// 可以读String


BufferedInputStream br = new BufferedInputStream(ba);


// 也可以读文件




// BufferedInputStream br=new BufferedInputStream(new


// FileInputStream("d:/hello.txt"));




byte[] by = new byte[10];




int num = 0;






while ((num = br.read(by)) != -1) ...{




System.out.write(by, 0, num);


System.out.println();


}


bo.close();




} catch (Exception io) ...{


io.printStackTrace();


}




}






/** *//**


* 读字符,中文


*


*/




public void testCharBuffer() ...{




try ...{


BufferedReader br = new BufferedReader(new StringReader(


"myNnameIs小白sai "));


char[] by = new char[10];




int num = 0;


// StringWriter sw=new StringWriter();


// 这里不知道怎么用StringWriter.输出到文件吧


FileWriter sw = new FileWriter("d:/hello.txt");




BufferedWriter bo = new BufferedWriter(sw);






while ((num = br.read(by)) != -1) ...{


bo.write(by, 0, num);


bo.write(" ");


bo.flush();




}


sw.close();




} catch (Exception io) ...{


io.printStackTrace();


}


}


}