带符号字节的按位AND运算

Here is the code:

这是代码:

int i = 200;
byte b = (byte) 200;
System.out.println(b);
System.out.println((short) (b));
System.out.println((b & 0xff));
System.out.println((short) (b & 0xff));
int i = 200;
byte b