First time poster so apologies if I’m breaking some guidelines. I’m teaching myself Java/Selenium/Chromedriver and I’ve hit the first problem that I haven’t been able to work out myself. I’ll do my best to represent it below but please ask for more info if I haven’t include…
Tag: java
Calculating the difference between max of even numbers and min of odd numbers of an array
The question statement says – You are given an array of integers A of size N. Return the difference between the maximum among all even numbers of A and the minimum among all odd numbers in A. Examples – A = [5, 17, 100, 1] – Ans => 100-1 = 99 My Approach – The code is working fine f…
Apache Wicket with Spring version dependencies
Is there any known version dependencies between Apache Wicket and Spring? Couldn’t find any from the Wicket or Wicket-Spring bridge documentation . For example can Wicket 7 be run with Spring 5, Wicket 9 with Spring 4 and so on. Answer Wicket 7.x uses Spring 4.1.x – https://github.com/apache/wicke…
What is the use of the “dup2_x2” instruction in JVM bytecode?
Java has a dup2_x2 instruction which, according to the documentation, has the following behavior: Duplicate the top one or two values on the operand stack and insert the duplicated values, in the original order, into the operand stack. Does javac produce bytecode with this instruction? What are its potential …
use wsdl file from another maven submodule to generate java files
I am working on a project with separate sub modules for backend and frontend and some other sub modules too. Currently, both these modules have their own copies of wsdl files and generate java files using maven plugin. I want a single copy of the wsdl files so want to create a maven submodule with these wsdl …
Get PID in logback log file
When using logback outside of Spring-Boot, how can I get the ProcessID into the log file name? In the RollingFileAppender I’d like to define: How can I get the ${PID} set or is there a standard way of obtaining this? Answer Learn how to get the own PID from inside the JVM – How can a Java program …
How do I hide a NativeAdView ad template?
How can I hide where the ad appears if there is no ad? This is the advertisement that I have. It works and there is no problem, but in the event that there is no advertisement, the template remains. I want it to disappear and appear only when an advertisement is available enter image description here NativeAd…
Android and SQLite: “nested” getReadableDatabase
In my Android app I use the following code to access db: method1 and method2 can be called independently from outside the class. In addition, there are situations where method1 must call method2. In method2 I need a db instance, so I should call SQLiteDatabase db = helper.getReadableDatabase();. This is ok if…
How to generate .dot file using Schemacrawler
Using schemcrawler I’ve generated html file But I want to have an output in .dot file that contains diagram, node, graph, edge etc.. So how can I do it using my code or maybe some another way to do it with Java? Answer Simply change the output format from TextOutputFormat.html to DiagramOutputFormat.scd…
Why can’t I use Gradle DSL in apply’ed files
In our team we have lot of projects built with Gradle. Some parts in the Gradle files are all the same. For example, we use Java 11 in all our projects. So my idea was that I could split up my build.gradle files into a common part, that is then synced from a central repository into every Gradle project while