Java调用者可以在类返回的字节缓冲区中找到空字符，但在类中迭代字节缓冲区时找不到空字符。

Question

下面的代码将通过一个充满bytebuffer的Java中的chars并构建一个string。

      StringBuilder actualString = new StringBuilder();

      for(int i = 0; i < length; i++)
       {
            if((char)bbuf.get(i) != '\0');
            {
                actualString.append((char)bbuf.get(i));
                System.out.println("ascii code is " + bbuf.get(i));
            }
        }

代码正确工作，当遇到\0 (null结束符)时，当使用类的调用者获得bytebuffer，并在包含调用函数的地方进行迭代时，代码将停止。

例如

new bufclass = bufclass

buffclass.getbytebuffer

run code from above

但是，当我在bytebuffer生成后并在包含bytebuffer的类中分配该代码时，它从未停止在\0字符处。

一个如何做到这一点的例子将是

create bytebuffer and allocate bytebuffer

run code to iterate from above

为什么我的代码在使用调用者遍历bytebuffer以获得bytebuffer时工作，而当代码被添加到包含bytebuffer的类时却不能工作。

请注意，这是我打印ASCII字符代码时的结果，是的，我确实尝试了不起作用的if the byte is equal to 0。

ascii code is 116
ascii code is 101
ascii code is 115
ascii code is 116
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0
ascii code is 0

Answer 1

在if语句之后有一个;：

if((char)bbuf.get(i) != '\0');

这在功能上相当于

if((char)bbuf.get(i) != '\0') {
}

所以，去掉那个;，你就可以走了。