I am writing a simple web service and have put my web.xml file in the WEB-INF folder. For some reason everything in the servlet-class tag is coming up as “cannot resolve class MyServlet”. The class MyServlet is in the src folder under root directory. I cannot figure out why as to why this is happe…
Tag: java
How to achieve circular UI in tab view android java
I am working on a project for a client and they gave me the UI where I have to implement a certain tab like layout and I was wondering how to achieve this kind of tab on android. I have attached the image below. Any help would be much appreciated. The snapshot of what I want to achieve Answer If
How to Serialize and Deserialize multiple objects in Java during runtime
I am creating a Login Form and Sign up Form using JFrames. The problem is every time when the user presses the Sign up button the user details should be serialized and added to the “users.ser” file. And if the user presses the Login button it has to deserialize the data from that file and check fo…
Spring Boot multiple slashes in path variable
I’m trying to do but I want it to match: and so on I tried regular expression matching but came up with nothing. What would be the best way to do this? Answer you can try like this if key is a static if key is a dynamic
int io.jsonwebtoken.SignatureAlgorithm.getMinKeyLength()’ no such method error while generating a token key for authentication
Hello all I am trying to use JJWT to generate a security token for authenticating users. But getting this error. Here is my pom.xml file: Here is my method to generate a token if needed How to solve this problem? I tryed before to changed version of jjwt to 0.11.2 but got a build eror it couldn’t find a…
How do I create an Image from a byte array?
I want to be able to take the data of an image as an array, modify it, and then use that array to create a modified image. Here is what I attempted: Here is how it works. The robot takes a screen capture of the screen, which is then stored into a BufferedImage. The data of the image is stored
Animate adding components to a pane
I want to implement some kind of notification system in my application but I have trouble with the calculation of the actual position of my notification. All notifications should appear in a separate stage and each notification should be aligned among themselves and each notification is a simple VBox with two…
Adding Maven framework causes problems in project
After adding Maven framework to my project everything turns red. A new package named “main” appears between packages “src” and the first package that I created “java.hr.production” (by hierarchy) as can be seen in the 1st picture. It also changes the import address. The 2nd…
How to roll up a 2D Grid in P3D with Processing
I have built a two-dimensional grid of rectangles with a nested loop. Now I want to “roll up” this grid in three-dimensional space, or in other words “form a cylinder” or a “column”. With the movement of my mouse pointer. Up to the “roll up” I get everything pro…
Access variable in try block
I want to remove the throws FileNotFoundException from the method head and put it into it. But then I can’t access in (the scanner) anymore! How to handle that? Answer The variable in is out of scope outside the try block. You can either do this: Or better yet, try with resources