bytecode

Question

what is a byte code?
dies it mean binary codes that are produced with java?
java has interpreter, so why it need to compiling and binary codes(bytecode)?

Answer 1

Byte code is the machine language of the Java Virtual Machine. When you write code in Java language it is compiled to byte code which is executed/interpreted by the JVM. Inside the JVM there is a Just In Time compiler (JIT) which generates real machine code from byte code for better performance.

Answer 2

The extention of bytecode is
. class