拷贝一个目录(文件)到指定路径

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.OutputStream;

public class Test {

public static void main(String[] args) {

}

public void copy(File source, File target) {

File tarpath = new File(target, source.getName());

if (source.isDirectory()) {

tarpath.mkdir();

File[] dir = source.listFiles();

for (int i = 0; i < dir.length; i++) {

copy(dir[i], tarpath);

}

} else {

try {

InputStream is = new FileInputStream(source);

OutputStream os = new FileOutputStream(tarpath);

byte[] buf = new byte[1024];

int len = 0;

while ((len = is.read(buf)) != -1) {

os.write(buf, 0, len);

}

is.close();

os.close();

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

}

}

import java.text.SimpleDateFormat;

import java.util.Calendar;

public class Test {

public static void main(String[] args) {

Calendar cal = Calendar.getInstance();

cal.add(Calendar.DAY_OF_MONTH, 1000);

System.out.println(new SimpleDateFormat("yyyy-MM-dd").format(cal.getTime()));

}

}