When creating an Observable like this: doOnSubcribe is called, doOnDispose is not called. Why is that? Answer You need to use the doFinally() operator. doOnDispose() has a very narrow use case, where the observable is explicitly disposed. In your example, the observable terminates “naturally” by o…
Can IntelliJ generate chainable setters/mutators for Java classes?
Is it possible to generate chainable field mutators in IntelliJ IDEA? Preferably with a prefix other than set to avoid breaking conventions. Let’s say withX is the chainable companion to setX. For example, given this class stub I can use Generate -> Setters to generate a public void setFoo(String foo…
How to send hyperlink in message body using javamail API in my app?
I need to send verification email to the user in my application and in that mail i want to send an url as a hyperlink, i am able to send email successfully but i am not getting how to send hyperlink in the body text. My code where i am sending email to user :- This one is my Mail.class
Java-Merging two strings using alternating characters while also preserving runs
Merges two strings together, using alternating characters from each, except that runs of the same character are kept together. For example, (“abcde”, “xyz”) returns “axbyczde” (“abbcde”, “xxxyzzzz”) returns “axxxbbyczzzzde” Given the code…
Benders.Strategy using Java and opl
I’m solving a mathematical model using Java however when i tried to call the Benders Strategy i keep receiving this error: Exception in thread “main” java.lang.IllegalArgumentException: No enum class ilog.cplex.cppimpl.IloCplex$IntParam with value 1501 at ilog.cplex.cppimpl.IloCplex$IntParam…
Cannot resolve symbol “FirebaseInstanceId”
I am trying to use FirebaseInstanceId but keep getting the error “Cannot resolve symbol FirebaseInstanceId”. The modules gradle includes The only thing which exists on com.google.firebase.iid seems to be .zzb. Am I missing something? Answer Make sure you have all of these Just this much is require…
Camel unit test with cameltestsupport, template is always null
I am doing a simple unit test with Camel. All I want to do is to read JSON content from a file (under resources), send it to a Java class for validation – this is the route that I am trying to test. Whatever I do, the template (which I use to sendBody(json) is always null. Here is my code:
Spring Boot take over web.xml configuration
I have a Spring Boot web application that works fine. Now I got a 3rd party lib which I must use in the project. The manual of integrating the lib is written with respect to an existing web.xml file. My project completely relies on a Java based config. According to the Spring documentation I can reach my goal…
Turn off ssl certificate validation for JiraRestClient
I’m trying to connect to my Jira via the atlassian rest api java framework: But this causes a errors: javax.net.ssl.SSLHandshakeException: General SSLEngine problem PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested…
How to insert multiple keys with the same value into a hash map in Java?
I am doing the following coding challenge in java: My idea is to insert all these letters in a hash map by doing something like this: Is there any way to do this in java? Answer You said in your comments that you would like to be able to add all these entries in a single statement. While Java is