I’ve been working through the HackerRank problems and trying to always research a solution before asking in any communities for help. While I managed to get the current one to work, I feel there is some unnecessary code involved and that someone can teach me how to do it better, as I’d hate to pic…
How to use the entire wildcard value as a redirect result in Struts 2
I am wondering how I can use the Struts2 wildcard feature to redirect users to another action based on the return value: struts.xml: Action: In some cases, return result SUCCESS or INPUT is valid, but in all other cases I want the exact string that I return be used as the redirect location. If I replace my st…
Android – Prevent white screen at startup
As we all know, many Android apps display a white screen very briefly before their first Activity comes into focus. This problem is observed in the following cases: Android apps that extend the global Application class and perform major initializations therein. The Application object is always created before …
Enable/Disable uitabs in MATLAB
I’m using uitab group in matlab in my GUI. However one limitation of the UItabgroup is absence of enable/disable feature.I tried to use other alternative by using a function from the matlab communnity findjObject I use the following way to do that using the above function. and I get the following error …
Store in Array List two child classes of the same parent class
I have a parent class User with only Attributes Username and Password. Also i have two Child Classes Customer and Admin. Can i store to the same ArrayList both customers and admins? I need to use the username and password attributes to authenticate them for the log in. Answer yes , you can make an Arraylist o…
Escaping someway the Todo keyword in IntelliJ IDEA
I’m developing an example of web application (in Java) which is used to manage Todo tasks. Thus I have an entity called Todo and obviously in many comments I use the Todo word referring to my Todo …
Java – How to Solve this 2D Array Hour Glass?
I am working on a problem where I’ve to print the largest sum among all the hourglasses in the array. You can find the details about the problem here- What I tried: Input: Output: Expected Output: Screenshot: I don’t know where I’m doing wrong. I cannot understand why the expected output is …
NullPointerException on validating email
I am writing a unit test to check the email validation logic. The logic is throwing null pointer exception when you run the test. But it works fine with emulator. Can someone help me solving this? Below is my unit test. The error I am getting is, Answer android.util.Patterns.EMAIL_ADDRESS.matcher(email).match…
How to get WebElement text with selenium
Please see the following element: Find my element: So after found this div and get the text using selenium with getText or getAttribute(“innerHTML”) the return: So my question is how to get only the last line without this x Answer The text you want is present in a text node and cannot be retrieved…
Ignoring blank lines in CSV file in Java
I am trying to iterate through a CSV file in Java. It iterates through the entire file, but will get to the end of the file and try to read the next blank line and throw an error. My code is below. Like I typed, this works fine until it gets to the end of the file. When it gets