hello guys i hope you’re doing well, I’m catching an exception (DataIntegrityViolationException) where the specified id can’t be deleted because it’s still in the parent entity. I want to know if there is any way to get that specified id from the caught exception. Answer DataIntegrityV…
Tag: java
GuideLine problem Android Studio – ClassNotFoundException
I have problem with GuideLine, does someone know the solution? It look like the guideline is missing classes The following classes could not be found: – android.support.constraint.Guideline (Fix Build Path, Edit XML, Create Class) Logcat after button click: Guideline problem XML Code: Build Gradle: Answ…
Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled. How can I solved Problem?
Error starting ApplicationContext. To display the conditions report re-run your application with ‘debug’ enabled. pom.xml 4.0.0 org.springframework.boot spring-boot-starter-parent 2.6.6 kodlamaio northwind 0.0.1-SNAPSHOT northwind Demo project for Spring Boot <java.version>11</java.versio…
How to disable clicks on DotView?
I am using a custom view from here. I want to disable user interactions with the view pager 2 using this: But, it moves when I click on a dot of that view. I tried to disable that using this: But, that does not seem to work. Then how can we disable clicks on it? Answer Library uses setOnClickListener internal…
How can I identify the recipient of the email?
The sender works fine, but I couldn’t make the receiver. Can you help me? Answer I don’t know exactly how the design is. I’m also not sure where you got the recipient email from, but maybe this code will be useful for you.
How can a interface Stream extend Base stream interface having type bounds just as the stream interface i.e. Stream ?
I was going through Streams Documentation and had observed that Stream is a typed interface that extends Base Stream with types as T and again Stream <T> How can a interface Stream can extend Base stream interface having type bounds just as the stream interface i.e. Stream <T>? Answer Why couldn&#…
Creating a list of avalible Timeslots based on a list LocalDateTime objects and a List of taken Timeslots with Streams
I have a List<Timeslot> that contains entity Timeslot with the following fields: timeslot_id; day; start_time; end_time. For example, this list contains two records: start_time of the first record equals 9:00 and end_time equals 10:00. start_time of second object equals 10:00 and end_time equals 11:00. …
How to retrieve ONE column from another table with Foreign key using Hibernate / JPA
I would like to use the Foreign key “MODEL_ID” to retrieve just one column “MODEL_NAME” from the TT_CARS table, I tried the following code, that works but it returns the whole CARS object. Also I tried the code below, its also not working Is there other way to retieve just the column (…
Weird Lazy Casting Behaviour for character in Java 11
Can someone kindly explain the casting behaviour I illustrated below? Code Expected Output Actual Output As observed, when -1 is cast to char & back to short, it remembers what it was (which is -1) whereas when cast to an int it is 65535. I’d expected charo to be 65535 due to underflow upon casting …
How can I print out in the “while” section of a do while loop in java?
This is my current code. I would like it to return a System.out.println(“Please enter a number above zero”) if the user enters a “0”. It currently just repeats, if the user enters 0 Currently, it checks if the user has entered a 0 and repeats. Answer Although I would add expected value…