【Java】IO流--转换流--InpuStreamReader、OutputStreamWriter

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;

public class TestIROW {
    public static void main(String[] args) {    
        BufferedReader br=null;
        BufferedWriter bw=null;
        try {
            //任务需求，从键盘获取数据，写入磁盘文件
            //(1)数据源是标准的输入设备，键盘System.in
            InputStream is=System.in;
            //(2)需要使用转换流，转换成字符流
            InputStreamReader isr=new InputStreamReader(is, "UTF-8");
            //(3)提高读取效率
            br = new BufferedReader(isr);
            //(4)提高写入效率
            bw = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("F://copy5.txt"), "UTF-8"));
            //(5)写入磁盘文件
            String str=null;
            while(!"over".equals(str=br.readLine())) {
                bw.write(str);
                bw.newLine()；
            }
　　　　　　　bw.flush();
        } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }finally {
            //(6)关闭
            if(bw!=null) {
                try {
                    bw.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
            if(br!=null) {
                try {
                    br.close();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
        
    }
}