What does the ampersand mean in this code?
int clothes = (random.nextInt(0x1000000) & 0x7f7f7f);
What does the ampersand mean in this code? int clothes = (random.nextInt(0x1000000) & 0x7f7f7f);
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What does the ampersand mean in this code?
int clothes = (random.nextInt(0x1000000) & 0x7f7f7f);
It’s the bitwise AND operator.
It operates on each bit position independently; the output bit in position n is only 1 if both the corresponding input bits in position n are also 1.
In this context, the
0x7f7f7fis being used as a bit-mask. By having certain bit positions as 0, it means that the corresponding bit positions inclotheswill always be 0. All other bit positions will take on the same value as produced byrandom.nextInt(0x1000000).