java字节流——实现文件的拷贝，将一张图片复制到另一个路径下

package com.oracle.core;

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class CopyImage
{
	public static void main(String[] args) throws IOException
	{
		InputStream in=new FileInputStream("D:\\hello.jpg");
		byte[] b=new byte[in.available()];
		in.read(b);
		OutputStream out=new FileOutputStream("D:\\hello1.jpg");
		out.write(b);
		in.close();
		out.close();
	}

}