I’m new at Java and I have a question. I have this array of objects: That contains this: I would like to know how can I filter this array by month and year. A first example would be filter the array by month 10 and year 2021. Any suggestion ? Answer You can use the Stream API to do it
what’s the benefit of using Serviceability Agent when debuging HotspotJVM under linux?
in linux, the Hotspot Serviceability Agent is implemented by ptrace, which will stop the debugee process. Since it has side effect on target JVM, why not just simply attach to that JVM? If SA has no impact on target JVM, then it’s very useful. But the truth is not. So I’m wonder what’s the meaning of using SA in linux?
Why does JUnit platform error appear when running a single test?
An error is thrown when running a single test: Failed to resolve org.junit.platform:junit-platform-launcher:1.7.0 The test is launched by clicking on the button in the form of a green triangle next to the name of the method. But if you run testing of the whole project through maven (lifecycle -> test), then such an error is not visible, and all tests
How to customize the internal server error message (error code : 500)
Consider a scenario where I want to create a record in database with the already existing ID. By doing this, we get “500-internal server error”. But I want to customize the message returned to “Id already exist, Cannot create record”. Below is the my sample existing code: Controller class : Service class : Postman Output : As in the above
Run background service only when phone is in use
I’m trying to make an android app that fires a background intent to “ping” a server with a post request about every 2 minutes (by default, interval is user-configurable). I absolutely need to avoid the service running when the phone is not in active use, and I need it to not defer the service like an AlarmManager would. If it
Null Values are assigned as values for a list in POJO SpringBoot/Java
I have a POJO that will be reading the data from a Kafka Consumer. I have a couple of list objects inside it and I am not able to understand the Null behavior of it EmployeeEBO.java AssignedWorkEBO.java So I am trying to Check whether the data from kafka is Empty/Null condition for the AssignedWorkEBO and it behaves odd When the
StaleElement exception error when asserting data in a table
I am trying to add data to a table and then asserting that data is added by collecting table data in a list but every time it throws me a StaleElement exception error, now I guess it is happening because the list is getting refreshed, so I am not sure how do I handle it. Here is my implementation I
Printing String Attribute Inherited from SuperClass shows Null
I am extending a class and using the super keyword to in my subclass constructors. However, when I attempt to print the inherited attribute String. It returns null } So when I create a TrueFalseQuestion object and call its getQuestion() method, I get output: null True/False? Why is it not printing the question I passed when creating the object? How
Getting java.lang.ExceptionInInitializerError when executing my Test
Here is my code for finding WebElement for all the records in a table My getter method to access the private WebElement Here is the function I’ve created to collect all the records in the table in a List Here is my test execution Now I’m getting an error java.lang.ExceptionInInitializerError when I’m creating an object jobCategories. Is it an issue
Ask the user for the starting value. Set up the output to display 10 values per line and then start a new line
Answer You can use Scanner to take user input. And use % function to change the liner after every 10 numbers: Input : 59 Output :