java IO流 将一张图片拷贝到另外一个地方

import java.io.File;
import java.io.FileInputStream;

import java.io.FileOutputStream;
import java.io.IOException;

public class DemoCopy {

/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
copy();

}
public static void copy() throws IOException{

//1.读取数据输入字节流
//找到图片路径
File file = new File("D:\img\01.jpg");

FileInputStream inputStream = new FileInputStream(file);
//2.写入数据输出字节流
File file1 = new File("D:\01.jpg");
FileOutputStream outputStream = new FileOutputStream(file1);

byte [] b = new byte[1024];

while (inputStream.read(b)!=-1) {

outputStream.write(b);

}
//关闭流 关闭流原则：先开后关，后开先关。

outputStream.close();
inputStream.close();

}

}