I am unable to force a version of a dependency using Gradle. My goal is to use version 0.20.0.RELEASE of the Spring HATEOAS library, but despite all my efforts it keeps resolving to 0.19.0.RELEASE. I have attempted a number of strategies, both in isolation and in combination with one another. These strategies…
Import Windows certificates to Java
I have a java server that is trying to connect to an external Ldap server through SSL (as a client in order to perform queries). I’m having trouble connecting since the certificate they send me upon connecting is trusted only in my local windows Truststore but is not present in java truststore (cacerts)…
Mutex Locks vs Peterson’s Algorithm?
Do mutex locks ensure bounded waiting condition ? Is it possible if two threads are trying to get hold of a lock, but only one process (just by luck) gets it again and again. Since Peterson’s Algorithm ensures bounded waiting, is it better to use that instead of mutex locks ? Answer It is possible to ha…
RSA Encryption disparity between Android and Java environments
Firstly, apologies for the amount of code I’m about to post. I’m trying to use the RSA public key from my Java application to encrypt a message in an Android app, and then send the ciphertext back to a Java environment for decryption, but upon attempting to decrypt I always get this error: The cip…
Java encryption with sha256 and salt
I need a little help from you, I have an exercise , to do a login program and to store the password with sha-256 and salt, I made a part, but here it’s the hard part. I’ve read that if you use sha-256 that you can’t reverse the operation to determine the password. If it’s true then wha…
java.lang.NoClassDefFoundError: Could not initialize class org.apache.jmeter.gui.util.MenuFactory
when i open apache-jmeter-3.1 and right click the test-plan button,it turns out to be no response and throws lists of errors in the jmeter.log as follows what happened and how can i fix it? thanks !!! it has bothered me a long time… Answer Normally this happens when a Dependent jar is not present or in …
Apache Directory Studio java was started but returned exit code=13
I have to install Apache Directory Studio. For this I perform the below Steps Download ApacheDirectoryStudio-win32-x86-2.0.0.v20130628.exe Double click on ApacheDirectoryStudio-win32-x86-2.0.0.v20130628.exe and perform Next than it ask for Java Home Directory I browse and give the path C:Program FilesJavajdk1…
Handle Security exceptions in Spring Boot Resource Server
How can I get my custom ResponseEntityExceptionHandler or OAuth2ExceptionRenderer to handle Exceptions raised by Spring security on a pure resource server? We implemented a so whenever there is an error on the resource server we want it to answer with The resource server uses the application.properties settin…
How does the recursion of printNStars work?
I don’t understand the output of this recursion. Can someone please help me? (flowchart will definitely help me understand..) Output of the code above: Answer It works in the following way: which can be translated into: there is also an exit rule. If n is 1, don’t draw previous rows. Just print on…
How to connect to java server (socket) using internet
I’d read a tutorial from here. It is chat application made using java for server side and client as well and android as client. Its running good without any error just need to connect on ip address of server but my question is, can i use it over internet as well as over wifi? if yes then how? Answer Jus…