Does having TransactionAttributeType.NOT_SUPPORTED on every DB lookup method makes sense? I don’t see the point in having the entity attached if it’s not going to execute an update. Does it still end up in the cache? The only time it seems useful to use the REQUIRED transcation propagation is when…
How to get browser name using Selenium WebDriver with Java?
I have a test case and need to execute based on the browser name i.e. IE or Chrome. In this test case some part will depend on browser type. How will I get the browser name in between the execution? Example if it is IE, I need to pass the data. If it is Chrome browser, I need to select
Why can you have a duplicate variable name in java for a variable outside of a method?
I am learning Java and I understand that you cannot name a variable declared within an inner scope the same name as a variable declared in an outer scope as shown below However, I noticed that the following is not illegal Is this not a variable that is declared twice?? Answer Is this not a variable that is de…
org.hibernate.exception.SQLGrammarException: could not insert
Hi i am trying to insert new row in table using hibernate with bean class i am getting exception i am using below mentioned code: hbm file: Action class: Dao class Execption Caused by: where I’m wrong in this code? Answer Mapping database column types to Java types performed by Hibernate mapping configu…
Difference between registerGlobal(), configure(), configureGlobal(),configureGlobalSecurity in Spring security
I have below three code snippets all doing the same thing: creating in-memory authentication. So how it impacts defining it in different method names? registerGlobal configure configureGlobal configureGlobalSecurity First one: Second one: Third one: Fourth: UPDATE 1 : One more thing I would like to add: confi…
Simple calculator program in Java
I am a newbie coder in Java and I am trying to make this calculator in java where a user can enter two numbers and select the operation to be done on those numbers. However when the code comes to selecting the operator it skips the user input and the if statement and directly implements the else statement. An…
Confirmation of HTTP endpoint for SNS Subscribers
When I create a SNS topic using cloud formation and at the same time configure a HTTP endpoint it is possible that the HTTP endpoint might not be functional at that time. So is it possible to set the retrial for sending these confirmations requests at some later stage. My use case is that the HTTP endpoint wi…
Scheduler not running in Spring Boot
I have created a Spring Boot application. I have configured my class that contains the scheduler method startService(). Below is my code : Service Class : Main Class : I have annotated the class as @Component and also method as @Scheduled(fixedRate = 30000) that will running as a scheduler. But while running …
Mapping a stream of tokens to a stream of n-grams in Java 8
I think this is a fairly basic question concerning Java 8 streams, but I have a difficult time thinking of the right search terms. So I am asking it here. I am just getting into Java 8, so bear with me. I was wondering how I could map a stream of tokens to a stream of n-grams (represented as arrays
gradle refresh failed: address already in use
Whenever I want to start a project in Android Studio, I have this error: Gradle ‘TestProject’ project refresh failed Error:Address already in use: Cannot bind Until 2 days ago it worked perfect. Log looks like this: Answer I finally found the problem, it was because of my company antivirus (F-Secu…