按指定编码读写文件

import java.io.FileInputStream;

 import java.io.FileNotFoundException;

 import java.io.FileOutputStream;

 import java.io.IOException;

 import java.io.InputStreamReader;

 import java.io.OutputStreamWriter;

 import java.io.UnsupportedEncodingException;



 public class EncodeTest {

 public static void main(String[] args) throws IOException {

//writeText();

readText();

 }



 public static void readText() throws IOException{

InputStreamReader  isr=new InputStreamReader(new FileInputStream("G:\\gbk.txt"),"gbk");

char[] buf=new char[1024];

int len=0;

while((len=isr.read(buf))!=-1){

String str=new String(buf,0,len);

System.out.println(str);

}

isr.close();



 }

 public static void writeText() throws IOException{

OutputStreamWriter  osw=new OutputStreamWriter(new FileOutputStream("G:\\utf.txt"),"utf-8");//使用utf-8编码



                    osw.write("你好");

                    osw.close();



 }

 }