Byte in java code example

Example 1: what is bytecode in java

When a javac compiler compiler compiles a class it generates .class file. 
This .class file contains set of
instructions called byte code. Byte code is a machine independent language 
and contains set of
instructions which are to be executed only by JVM. JVM can understand 
this byte codes.

Example 2: byte java

byte numberMin = -128;
byte numberMax = 127;