Background info: I’ve made a program that uploads an image using JFileChooser and fills in the space of the JFrame. I then apply filters via buttons. Currently 3 of my 4 filters work, or all except my mirror one. It randomly (or I guess not so randomly as there’s always a reason, I just don’…
Tag: java
Can’t pass wildcard Comparator to function
I have the following sort method in a clone of ArrayList: The sorter object is an instance of Sort: I get the following error on the sorter.mergeSort line: I’m not sure why this is happening as both the parameter and argument have type Comparator<? super E>. Answer Thanks to everyone for their com…
Kth smallest number algorithm doing extra work?
So I’m preparing for a technical interview, and one of my practice questions is the Kth smallest number. I know that I can do a sort for O(n * log(n)) time and use a heap for O(n * log(k)). However I also know I can partition it (similar to quicksort) for an average case of O(n). The actual calculated a…
Is there a way to include a Multi-transition within ViewPager2?
Am using an array list that holds 5 images which change after an interval of 5seconds on the viewpager2 using handler and runnable,the images change perfectly well from the 1st image to the 5th image and restarts the process again using slide transition, the problem i have is changing the animation as it rest…
How to configure slf4j (for JDA) to work with log4j (for Minecraft Paper)?
I’m making plugin for Minecraft – ‘Paper’ exactly. And it uses JDA for Discord bot function. The problem is, Minecraft(Paper) uses log4j as its logging library. JDA uses slf4j as its logging library. I want JDA to use log4j so that error message of JDA would be shown in console as plug…
Regex – recognise clusters of numbers and characters but only match a part with numbers
I want to write a regex that extracts numbers that might be related to age. It should recognise both simple ‘forms’ as 98, 1, 25 and more complex like 90-years-old. However, in case of more complex forms, I would like it to only match a number. I will later check if it concerns the age, but this i…
How to programmatically align two Textviews and a Seekbar in the same line?
How to programmatically align a textview, a seekbar and another textview in the same line in android studio? Textview seekbar textview I have written the following code snippet: The following is my XML file: Current scenario: Answer Currently the LinearLayout has android:orientation=”vertical”, so…
How to fix net::ERR_INCOMPLETE_CHUNKED_ENCODING 200 java web app?
I am working on a java web app and I am setting the jsessionid attributes: HttpOnly, Secure and SameSite in the doFilter() method of InitSession class. I have this set as such: When navigating to the 3rd page in the app I get the error: net::ERR_INCOMPLETE_CHUNKED_ENCODING 200 This only started happening afte…
Java object access for same overall implementation
Perhaps the title of question isnt well created, but i couldnt understand what else I could put in there. I wanted to understand, why the first one out of the two below cases works, and how can I get the second one to work as well, given the overall implementation is same. From a code point of view, what prin…
I don’t understand this opcode in JVM Implementation
I am writing a JVM. I was implementing all opcodes one by one, until I faced dup2. The oracle instruction set https://docs.oracle.com/javase/specs/jvms/se7/html/jvms-6.html#jvms-6.5.dup2 says Duplicate the top one or two values on the operand stack and push the duplicated value or values back onto the operand…