import *;

class CopyPicture
{
    public static void main(String[] args)
    {
        FileOutputStream fos = null;
        FileInputStream fis = null;

        try
        {
            fos = new FileOutputStream("c:\\1.jpg");
            fis = new FileInputStream("c:\\2.jpg");

            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)
            {
                System.out.println(e.toString());
            }

            try
            {
                if(fos != null)
                    fos.close();
               
            }
            catch(IOException e)
            {
                System.out.println(e.toString());
            }
        }
    }
}
调用的图片是在指定的位置的，但是运行后会出现 Exception in thread  "main " java.lang.RuntimeException :文件复制失败！
麻烦帮忙指点一下，多谢大家了
 

把e打印出来就知道是什么问题了

好了，多谢

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