将某文件夹内容备份 - 黑马程序员技术交流社区

import java.io.*;
class CopyDirectory
{
public static void main(String[] args)
{
File srcFile = new File("E:\\test");
File tarFile = new File("F:\\");
copyDirectory(srcFile,tarFile);
}
private static void copyDirectory(File srcFile ,File tarFile)
{
try
{
if(srcFile.isDirectory())
{
tarFile = new File(tarFile,srcFile.getName());
tarFile.mkdir();
}
File [] files = srcFile.listFiles();
if(files == null || files.length == 0)
return;
for(int i=0;i<files.length;i++)
{
File temFile = files[i];
if(temFile.isDirectory())
copyDirectory(temFile,tarFile);
else if(temFile.isFile())
{
FileReader fr = new FileReader(temFile);
String sFileName = temFile.getName();
File temTarFile = new File(tarFile,sFileName);
FileWriter fw = new FileWriter(temTarFile);
char [] bytes = new char[1024];
int len = 0;
while((len = fr.read(bytes)) != -1)
{
fw.write(bytes);
}
//if(temTarFile.getName().endsWith(".java"))
//System.out.println(temTarFile.renameTo(new File(temTarFile.getAbsoluteFile().getName().replace(".java",".txt"))));
try
{
if(fr != null)
{
fr.close();
}
if(fw != null)
{
fw.close();
}
}
catch (IOException ex)
{
}
}
}
}
catch (IOException ex)
{
ex.getMessage();
}
}
}

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