java


Why does the same JAR file have different hash every time I build it?


I've been thinking about checking jar file's hash value to determine if it has changed or not, but as it turns out the same jar file has different hashes every time I build it (export as jar file from eclipse, or build it using maven). I've removed manifest file's date values and stuff but it still is different. Is there something in bytecode generation which includes a timestamp or something?
A JAR file is a ZIP file and it contains a last modified date in its local file headers and central directory file header. This will lead to different hashes of your builds.
If you run the JAR command on the exact same set of files (with same file dates) and skip manifest file creation it should give you the exact same JAR file (if the order of files inside the ZIP does not change).

Related Links

Android ENOENT with some files
“ResourceNotFoundException: An active access token must be used to query information about the current” user when fetching user info from facebook
The same locale provides different week numbers for the same date on different machines
How to harness url in Spring MVC?
Unmarshall JSON to subtypes with different field type jackson
java.sql.Exception: attempt to write on read-only database in java Swing Application
The annotation #Qualifier is disallowed for this location
add cert to com.sun.net.httpserver.HttpsServer
Spring boot Security, Oauth2 logout, invalidate session in order to go through the authentication and approval cycle in the authorization server
Intent in an adapter using global variables from activity
Remove space from String in number format [duplicate]
The Tomcat doesn't deploy my current my code changes
Build, clean issue with android studio
Do not concatenate text displayed with setText issue + App crashing when other language than default lang is used
Extract PDF file in java and render as HTML
How to handle the JAVA WatchService Overflow event?

Categories

HOME
yii2
pdf
reflection
kalman-filter
google-docs
malloc
microservices
twitter-bootstrap-4
packages
gps
django-imagekit
virtualization
windows-azure-storage
windows-phone-7
propel
beyondcompare
firefox-webextensions
scichart
amazonsellercentral
paging
intentfilter
orleans
google-search-api
telerik-reporting
zurb-foundation-6
poltergeist
subdomains
primitive
junit5
binary-data
phonegap
pdb
copying
mmenu
nssegmentedcontrol
host
vxworks
espeak
service-discovery
webdriver-manager
azure-ml
cookiecutter-django
node-gyp
firebase-admin
keydown
wptoolkit
fault
xml-documentation
hendrix
gabor-filter
jxcore
sybase-asa
akka-cluster
mako
cudafy.net
nested-sets
parallel-data-warehouse
google-feed-api
elements
bstr
pagerank
nessus
jfugue
pervasive-sql
rtbkit
spim
ora-00900
marching-cubes
retina
security-testing
varargs
0xdbe
myo
sailfish-os
cisco-ios
system32
xojo
openexr
article
contenttype
mechanize-ruby
android-2.2-froyo
gridfs
apc
jplaton
gridcontrol
random-seed
limejs
lcs
typoscript2
multipage
twrequest
pydot
spyware
hirefire
tomcat-valve
xdomainrequest
horizontal-accordion
javax.script
lpeg
createwindow
.nettiers
mtj
temporal-database
private-members
geneva-server

Resources

Mobile Apps Dev
Database Users
javascript
java
csharp
php
android
MS Developer
developer works
python
ios
c
html
jquery
RDBMS discuss
Cloud Virtualization
Database Dev&Adm
javascript
java
csharp
php
python
android
jquery
ruby
ios
html
Mobile App
Mobile App
Mobile App