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  • 学习笔记之流文件操作01(拷贝文件)

    public static void  copyFilePathName(String from,String toSrc) {
            FileInputStream inputStream = null;
            FileOutputStream outputStream = null;
            try {
                inputStream = new FileInputStream(from);
                outputStream = new FileOutputStream(toSrc);
                int len  = 0; //指向文件的开头
                byte[] data = new byte[20];
                //一边读一边写文件
                while((len = inputStream.read(data))!=-1){
                    outputStream.write(data,0,len);
                }
            } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }finally {
                    if (inputStream != null) {
                        try {
                            inputStream.close();
                        } catch (Exception e2) {
                            // TODO: handle exception
                            e2.printStackTrace();
                        }
                        
                    }
                    if (outputStream != null) {
                        try {
                            outputStream.close();
                        } catch (Exception e2) {
                            // TODO: handle exception
                            e2.printStackTrace();
                            
                        }
                    }
                        
                }
    public static void main(String[] args) {
    //        readFileByPathNaum(pathName);
            File file = new File("E:\aa");
            file.mkdirs();
            copyFilePathName("E:\test.txt","E:\aa\bb.txt");
    }
            
        
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  • 原文地址:https://www.cnblogs.com/GuangMingDingFighter/p/9468346.html
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