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https://issues.apache.org/jira/browse/LANG-1719?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17787689#comment-17787689
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Elliotte Rusty Harold commented on LANG-1719:
---------------------------------------------
Maybe in Android java.util.Random (which this class sits on top of) is somehow
different from the JDK Random? What happens if instead of random strings you
just use java.util.Random to output random numbers?
> RandomStringUtils.random outputs strings that are equal over and over
> ---------------------------------------------------------------------
>
> Key: LANG-1719
> URL: https://issues.apache.org/jira/browse/LANG-1719
> Project: Commons Lang
> Issue Type: Bug
> Components: lang.*
> Affects Versions: 3.13.0
> Environment: Samsung Smartphone
> Product name: Galaxy A53 5G
> Model name: SM-A536B/DS
> Software info:
> One UI version 5.1
> Android version 13
> Reporter: Benjamin Glatzeder
> Priority: Major
> Fix For: 3.12.0
>
>
> The following line of code outputs equal strings over and over:
> {code:java}
> RandomStringUtils.random(12,"abcdefghijklmnopqrstuvwxyz0123456789") {code}
> Steps to reproduce:
> 1) Create a new Android project in Android Studio
> 2) Add the following dependency to your gradle file
> {code:bash}
> implementation("org.apache.commons:commons-lang3:3.13.0") {code}
> 3) Use the following code in your MainActivity:
> {code:java}
> package test.randomstringutils
> import android.os.Bundle
> import android.util.Log
> import androidx.activity.ComponentActivity
> import org.apache.commons.lang3.RandomStringUtils
> class MainActivity : ComponentActivity() {
> override fun onCreate(savedInstanceState : Bundle?) {
> super.onCreate(savedInstanceState)
> val randomString =
> RandomStringUtils.random(12,"abcdefghijklmnopqrstuvwxyz0123456789")
> Log.d(TAG, randomString)
> }
> companion object {
> private const val TAG = "TAG"
> }
> }
> {code}
> 4) Run project and note the string in Logcat
> 5) Run project again and compare the new random string in Logcat
> One will note that the strings are equal. The expected result should be that
> the strings are not equal. Here's an example output:
> {code:java}
> 09:33:10.154 TAG tes...tringutils D m9mcx5ywuxdc
> 09:33:28.561 TAG tes...tringutils D m9mcx5ywuxdc
> {code}
> Using the previous commons-lang3 version in the project resolves the issue.
> Here are the steps to reproduce:
> 1) Replace
> {code:bash}
> implementation("org.apache.commons:commons-lang3:3.13.0") {code}
> with
> {code:bash}
> implementation("org.apache.commons:commons-lang3:3.12.0") {code}
> 2) Click on "Sync now"
> 3) Run project and note the string in Logcat
> 4) Run project again and compare the new random string in Logcat
> One will note that the strings are not equal. This is the expected result.
> Here's an example output:
> {code:java}
> 09:40:50.268 TAG tes...tringutils D 1tjkvkta6ibi
> 09:40:55.324 TAG tes...tringutils D 02nfvrf9pfgl{code}
>
> I was able to consistently reproduce this issue using a Samsung Galaxy A53 5G
> smartphone as well as on an Android Virtual Device (AVD). To the best of my
> knowledge the smartphone runs on an ARM processor and the AVD has an emulated
> ARM processor.
> I was *not* able to reproduce this issue when I created a Kotlin project in
> IntelliJ with similar lines of code which was running on my Windows machine
> with an x64 processor.
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