I have an application.properties file with default variable values. I want to be able to change ONE of them upon running with mvn spring-boot:run. I found how to change the whole file, but I only want to change one or two of these properties. Answer You can pass in individual properties as command-line argume…
How to show alert dialog for certain list item
I’m trying to show an alert dialog whenever I select a particular list item whereas the others would open a new fragment. However after inserting the alreat dialog code, an error is then returned. I …
File structure listing as Json
How can I get a local directory listing as a Json? So If I provide a folder, I want to see all its subfolders and files in a json tree type object. Please note: I don’t want just the list with file paths. Thank you! Answer So @CommonsWare put me in the right direction and I was able to do
Rest Controller not recognizing GET request in Spring Boot App
I am trying to implement simple demo MVC app with Spring Boot but I get 404 error while executing the application. The uri is `http://localhost:8080/’ which is to display all the rows in a table called circle. Spring Boot : 1.3.3.RELEASE Java Version : 1.8.0_65 Database : Apache Derby 10.12.1.1 Maven Ja…
Java – Binary Tree pointer still null after initialization?
This question is very abstract and thus very hard to describe or search for, thus why I am here. It’s a very simple question however. I have the following class: What happens if I have: Notice that child is a pointer that points to either the left or the right child of root. BUT, what happens if I insta…
Method scope inside Java switch statement
In a rather loose way this question follows on from my previous one. The context here is building Android APKs with Phonegap CLI configured, via build-extras.gradle to use Java 7. Here is my code I am having some difficulty understanding two issues here As far as I can tell even without that last return I hav…
Why can’t i generate this 10×10 2D array?
I am trying to generate this 2D Array maze 10 by 10 with numbers 0-9 in each row for 10 rows, but I keep getting array out of bounds exception. I double checked my indexes and the loop format and everything looks standard. What is going on here? Why am I getting the out of bounds exception? Answer When you
logger usage, is parameterization better or using + to add arguments?
Which of the following is a better usage of logger? Parametrize (log4j 2) Using + operator (log4j) And why? Answer Even if there were nothing else, the additional StringBuilder shenanigans that happen when using + would make using parameters the obvious choice. Not to mention that when concatenating the value…
Cannot resolve method ‘findViewByID(int)’ in Android Studio
I only just started coding for androud, but I’ve been getting the error: “Cannot resolve method ‘findViewByID(int)’” in android studio I can’t seem to find out what is wrong, have tried setting contentView, implementing OnClickListenener, but none of these fixed anything. full co…
javax.net.ssl.SSLException: Connection closed by peer on 4.4.2 device (works on 6.0.1)
I have a problem with getting this error when I’m performing network calls inside my app. Main problem is that same code works on Android 6.0.1 device, but on 4.4.2 device, I’m getting this error: where I’m unable to request data from server. If you need more data, feel free to ask. Thanks. …