byte is a Java primitive type.
A byte can store an integer value in the range [-128, 127].
byte b = 124;
The Byte class is a wrapper class for the byte primitive type. It defines MIN_VALUE and MAX_VALUE constants representing the range of values for this type.
All integer literals in Java are 32-bit int values unless the value is followed by l or L as in 235L, indicating the value should be interpreted as a long.