黑马程序员-----字符流copy文本文档(黑马视频)

来源：互联网发布：优麒麟和windows 编辑：程序博客网时间：2024/06/08 15:23

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package src.com.itheima.ioDemo;

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class CopyFileDome {
public static void main(String[] args) {
  copyName("K:\\demo.txt");
}
public static void copyName(String str){
  FileReader fr=null;
  FileWriter fw=null;
  try {
   fr=new FileReader(str);
   fw=new FileWriter("K:\\java学习笔记\\demo.txt",true);
   int fr_ch=0;
   char [] c=new char[1024];
   while((fr_ch=fr.read(c))!=-1){
    fw.write(c,0,fr_ch);
   }

  } catch (Exception e) {
   throw new RuntimeException("读写失败");
  }finally{
   try {
    if(fr!=null)
    fr.close();
   } catch (IOException e) {
    e.printStackTrace();
   }
   try {
    if(fw!=null)
    fw.close();
   } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }

  }
}
}

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