java - 按位运算，如何判断是0还是1？

Question

我有一个整数，例如:

0x10000010

我想知道某个特定位是 1 还是 0。例如:

int number = 0x10000010;
for (int i = 0; i < 8; i++) {
    if (ith bit == 1) {
        System.out.println("bit " + i + " is 1.");
    } else {
        System.out.println("bit " + i + " is 0.");
    }
}

---- output ----
bit 0 is 1
bit 1 is 0
bit 2 is 0
bit 3 is 0
bit 4 is 0
bit 5 is 0
bit 6 is 1
bit 7 is 0

我忘记了如何执行此操作，以及这种类型的操作称为什么，

谢谢

Answer 1

number & (1 << i)如果未设置该位，则为 0；如果已设置，则为非零。