How to secure java code [jar file]

 I have been searching an easy way to encrypt my code to ensure my java code security. I have found an easy solution (free solution), May be you might like it : 

I'm useing jCrypt.jar for this here. Go download the file.    

source : https://github.com/wille/jcrypt/releases


How to use jCrypt.jar to encrypt jar file ? 

Step 01 : Make sure you have jCrypt.jar & Bin.jar in the same directory. 

Step 02: Double click jCrypt.jar file.

Step 03: Click Browser button & select the jar file you want to encrypt.  & click next 

Step 05 : Select your Mail file if not automatically selected the right one.  & click next 

Step 06 : Select "Encrypt classes (Resources will be in .jar)" option & click next 

Step 06 : Select the location along with file name where you want to write you file.  & click next 

Done :) close the jCrypt. 


Comments

Post a Comment

Popular posts from this blog

Android Date picker dialog setMinDate(long) and setMaxDate(long) issue

My objective was enable date with in certain range & disable the rest for date , so that user can't select those dates. I find these two method for date picker to set the minimum & maximum range. so first I able to disable all future dates with : d.getDatePicker().setMaxDate(System.currentTimeMillis()); this was working fine. Than I disable all dates before two weeks ago with this code : d.getDatePicker().setMaxDate(System.currentTimeMillis() - (2*7*24*60*60*1000)); it was working fine. here 2 for weeks, 7 for days, 24 for hour, 60 for minutes, 60 for seconds & 1000 for millisecond. so from last two weeks to current date my code was like this d.getDatePicker().setMaxDate(System.currentTimeMillis() - (2*7*24*60*60*1000)); d.getDatePicker().setMaxDate(System.currentTimeMillis()); The problem was when i desire to set range earlier this month. this process was not working. As an example i was planning to set date range between 42 weeks to 9 weeks early. t...
Read more

How to calculate total number days difference between to dates in Android - java, Android

I am looking for a suitable solution to calculate number of days given two given dates: I am working a Andriod app. After go through stackoverflow.com pages I found  julien  solution very effective : https://stackoverflow.com/questions/20165564/calculating-days-between-two-dates-with-in-java Most for other links are just measuring dates different within a month. when to count days within couple of month those are not working attest don't meet my demand. So her i found  org . joda . time library for    Java. than looking for what available for Android & get this  'joda-time:joda-time:2.9.9'  So, I add this to app gradle Sync . there the code wich is implemented in an editText field for comparing it exceed certain date or not . package android.exapmple.com.mydateset; import android.app.DatePickerDialog; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.DatePicker; import...
Read more

How to solve Android Studio rendering problem

Image
Android Studio can't render. After adding components I can't see anything in the screen. here's what i get : I have the following Error on the screen: It says: Render Problem :  Failed to load AppCompat ActionBar with unknown error. if you get issue like this please check out solution below, hope that will solve your problem. SOLUTION: Go to >> build.gradle(Module: app) :  DELETE  >> implementation 'com.android.support:appcompat-v7:28.0.0-rc02' ADD >> implementation 'com.android.support:appcompat-v7:28.0.0-alpha1'  [now it's not working, see the solution below this page] Then >> Sync now Just after 3 weeks get the same issue New Solution :    this time i change the following things, now it's working. Go to >> build.gradle(Module: app) :  replace  'com.android.support:appcompat-v7:28.0.0-alpha1' /  com.android.support:appcompat-v7:28.0.0-rc02  with  implem...
Read more