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Mateo Vargas
JoinedDecember 24, 2025
Articles53
Mateo is deeply involved in the Android community, frequently contributing to open-source projects and mentoring junior developers with patience and humor. He unwinds by learning new languages, currently practicing his Japanese during his daily commute and evening runs.
Java
·September 28, 2023

Log4J Vulnerability – Is Log4J 1.2.17 Vulnerable (Was Unable To Find Any Jndi Code In Source)

Investigations into the Log4J 1.2.17 version reveal it to be secure, as there seems to be an absence of JNDI...
Java
·September 22, 2023

What Do I Use Now That Handler() Is Deprecated

In the programming landscape where Handler() is now seen as deprecated, one can switch to using alternatives like Looper or...
Java
·September 19, 2023

Setonnavigationitemselectedlistener Deprecated

Java
·September 17, 2023

Filenotfoundexception Open Failed Eperm (Operation Not Permitted) During Saving Image File To Internal Storage On Android

When you encounter the error ‘Filenotfoundexception Open Failed Eperm (Operation Not Permitted)’ while saving an image file to internal storage...
Java
·September 13, 2023

Mac The Operation Couldn’T Be Completed. Unable To Locate A Java Runtime That Supports Jarsigner

Here’s an optimized sentence for you: When operating a Mac, you may encounter a roadblock saying ‘The operation couldn’t be...
Java
·September 6, 2023

How To Mock Jwt Authentication In A Spring Boot Unit Test

Java
·September 5, 2023

How To Solve The Mincompilesdk (31) Specified In A Dependencys Aar Metadata

By keeping a close eye on your project dependencies and ensuring they align with the required MinCompileSdk (31) specified in...
Java
·September 3, 2023

Build Failed Error Cannot Find Symbol If (Build.Version.Sdk_Int >= Build.Version_Codes.R)

= Build.Version_Codes.R)” width=”300″/>Addressing the Build Failed Error Cannot Find Symbol If (Build.Version.Sdk_Int >= Build.Version_Codes.R), this hurdle usually appears when your...
Java
·September 2, 2023

Spring Boot 3 Springdoc-Openapi-Ui Doesnt Work

Java
·August 31, 2023

Maven Build Failure – Compiler Plugin

Experiencing a Maven build failure can often be attributed to issues with the compiler plugin, hence it’s crucial to validate...
Java
·August 26, 2023

Jcenter Deprecation; Impact On Gradle And Android

The deprecation of Jcenter has substantial implications for Gradle and Android, as developers must transition to new repositories like Maven...
Java
·August 15, 2023

Reason No Instance(S) Of Type Variable(S) T Exist So That Void Conforms To Using Mockito

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