JVM Interview Questions

1. Which byte order(Little Endian or Big Endian) JVM uses?

Java used network byte order (which is big endian)

Lets say there are four memory addresses for lower to higher: 1000, 1001, 1002, 1003
and an integer of 32 bits(4 bytes) needs to be stored in these addresses.
integer in HEX format is: 10 AB 5B H4

Little Endian: Least significant byte will be stored in smallest address.
So value - address mapping will be: 10 > 1003, AB > 1002, 5B > 1001, H4 > 1000

Big Endian: Most significant byte will be stored in smallest address.
So value - address mapping will be: 10 > 1000, AB > 1001, 5B > 1002, H4 > 1003