/*
复制一个图片
思路:
1. 用字节读取流对象和图片关联
2.用字节写入流对象创建一个图片文件,用于存储获取到的图片数据
3. 通过循环读写,完成数据的存储
4.关闭资源
*/
import java.io.*;
class CopyPic
{
public static void main(String[] args)
{
FileOutputStream fos = null;
FileInputStream fis = null;
try
{
fos = new FileOutputStream("c:\\2.jpeg");
fis = new FileInputStream("c:\\1.jpeg");
byte[] buf = new byte[1024];
int len =0;
while ((len=fis.read(buf))!=-1)
{
fos.write(buf,0,len);
}
}
catch (IOException e)
{
throw new RuntimeException("复制文件失败");
}
finally
{
try
{
if(fis!=null)
fis.close();
}
catch (IOException e)
{
throw new RuntimeException("cuowu");
}
try
{
if(fos!=null)
fos.close();
}
catch (IOException e)
{
throw new RuntimeException("cuowu");
}
}
}
}
E:\java\Java1111\day19>java CopyPic
Exception in thread "main" java.lang.RuntimeException: 复制文件失败
at CopyPic.main(CopyPic.java:32)
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