for (byte b : readBuffer)里的：代表什么

Question

for (byte b : readBuffer)里的：代表什么，这行代码什么意思

Answer 1

这是迭代的for循环
for (byte b : readBuffer)
相当于
for (int i = 0; i < readBuffer.length; i++)
{
byte b = readBuffer[i];
...
}