Char and byte data types are easily confused, and their differences are mainly as follows:

1, different data types

Bytes? Is it a byte data type? , which is symbolic, can mean-128- 127? Number of;

Charles? Is it a character data type? Is unsigned and can represent integers, but not negative numbers.

Usage example:

Charles? Me? =? 85; //U corresponds to ASCII 85.

Bytes? d3？ =? 127; ? //? What if it's byte d3？ =? 128; Will you report an error?

Bytes? d4？ =? - 128; ? //? What if it's byte d4？ =? - 129; An error will be reported

2. The size and scope of the occupied space are different.

Bytes account for 1? Bytes; The size range is-128-127;

Char takes up 2 bytes (Unicode code? ); Size range? Is it 0-65535? ; Char is 16 binary Unicode character, and JAVA uses char to represent a character? .

In addition, char can represent Chinese characters, but byte can't. Usage example:

Charles? e 1？ =? Medium'? e2？ =? Country'; ?

Bytes? f=？ (bytes)? Medium'; ? //You must cast or report an error.

References:

Baidu encyclopedia -char

References:

Baidu encyclopedia-bytes