2019-3-6 复制粘贴

输入与输出~

代码块：

package com.test;

import com.sun.deploy.net.FailedDownloadException;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyPaste {
    public static void main(String[] args) {
        FileInputStream fis = null;
        FileOutputStream fos = null;
        try{
            fis = new FileInputStream("bdqncopy.txt");
            fos = new FileOutputStream("bdqn.txt");

            int result = -1;
            String info = "";
            System.out.println("能够读取到的字节数："+fis.available());
            while ((result = fis.read())!=-1){
                info +=(char)result;
            }
            System.out.println("读取完毕，准备复制");
            byte[]bytes = info.getBytes();
            fos.write(bytes,0,bytes.length);
            System.out.println("复制完毕，请刷新工程查看文件");
            fos.flush();
        }catch (FailedDownloadException e){
            e.printStackTrace();
        }catch (IOException e){
            e.printStackTrace();
        }finally {
            try{
                if (fos!=null){
                    fos.close();
                }
                if (fis!=null){
                    fis.close();
                }
            }catch (IOException e){
                e.printStackTrace();
            }
        }
    }
}

输出结果：

今日更新完毕~over！