package day21;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class InputStreamreader {

        /**
         * @param args
         * @throws IOException
         */
        public static void main(String[] args) throws IOException {
                InputStreamReader isr = new InputStreamReader(new FileInputStream("aaa.txt"),"utf-8");
                OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream("bbb.txt"),"gbk");
                int b;
                while((b = isr.read()) != -1){
                        osw.write(b);
                }
                isr.close();
                osw.close();
        }

}

package day21;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class InputStreamreader {

        /**
         * @param args
         * @throws IOException
         */
        public static void main(String[] args) throws IOException {
                InputStreamReader isr = new InputStreamReader(new FileInputStream("aaa.txt"),"utf-8");
                OutputStreamWriter osw = new OutputStreamWriter(new FileOutputStream("bbb.txt"),"gbk");
                int b;
                while((b = isr.read()) != -1){
                        osw.write(b);
                }
                isr.close();
                osw.close();
        }

}