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I was studying an open source code where I came across the following line
stringBytes[i] = (byte) (stringChars[i] & 0x00FF);
Can someone explain what is actually happening in this line ???
Char consists of 2 bytes in Java and of course byte is single byte.
So in this operation:
A char value (16 bits) is being binary ANDED with number 0x00FF (binary: 0000 0000 1111 1111) to make it one byte.
By binary ANDING with
8 0s and 8 1syou’re basically masking off 8 left most OR most significant bits (MSB) of the char value thus leaving only 8 right most or least significant bits (LSB) intact. Then code is assigning resulting values to a byte by using cast(byte), which is otherwise anintvalue.