java使用FileInputStream出实现错误

Question

public class file3 {
    //字节输出流
    /**
     * 拷贝图片*/
    public static void main(String[] args) {
        try {
            //源文件
            FileInputStream fis = new FileInputStream("c:/logo.png");
            FileOutputStream fos = new FileOutputStream("d:/logo1.png");
            //一次拷贝1K缓冲
            byte [] buf = new byte[1024];
            //循环拷贝
            int read = 0;
            while ((read=fis.read(buf)) != -1);{
                //写缓冲   从0开始到读到的位置
                fos.write(buf,0,read);
            }
            fos.flush();
            fos.close();
            fis.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

error：

Exception in thread "main" java.lang.IndexOutOfBoundsException
    at java.base/java.io.FileOutputStream.writeBytes(Native Method)
    at java.base/java.io.FileOutputStream.write(FileOutputStream.java:347)
    at file3.main(file3.java:21)

Process finished with exit code 1
 

Answer 1

文件流关的位置不对吧，可以加个finally，在里面再close