I have been asked to re-implement a linked list without the use of a tail. So I have to change its methods so it can work without using a tail node. The removeLast method confused me: here is what I tried to do, but it didn’t remove the node. What is wrong with my attempt? Test class Answer You need
Category: Questions
How to Map Object response to another ObjectDto in java
I have to map rest template response to my DTO with different key and values. currently I am getting this json response from rest api And I want to map it into my DTO for me able to save into DB What i want is to get only same key dynamically to match with the response of api above. Currently
Why does the Oracle JDK Javadoc not include the strict floating point modifier?
If I look at the StrictMath.toRadians() in the NetBeans Javadoc window, the top two lines read java.​lang.​StrictMath public static strictfp double toRadians(double angdeg) That makes sense, since …
I am trying to run the app on my Android 10 device and the following error is shown – minSdk(API 30) > deviceSdk(API 29)
I am trying to run the app on my Android 10 device from the Android Studio and the following error is shown – I think I have to change the minSdk value, but in which file and how to do it? Answer The device you are using has lesser API than minimum required API set by you. So, either you
Applet not running
Im fairly new to java and applet but when I run my code I expect to be greeted with some sort of applet window however nothing happens when I run. What am I doing wrong, or am I missing something ? Answer As Java Client Roadmap Update During the past five years, most browser vendors have withdrawn support for plugins
Is OpenAPI v.3 incomplete or convertor is wrong?
I am trying to validate some data for the REST API using swagger description. I have converted swagger.json into OpenAPI 3.0.1 using swagger editor conversion option, and now trying to read it into OpenAPI object with ObjectMapper with following lines of code: First, I got an error as it could not recognized the field x-codegen-request-body-name generated by the converter. Fine,
Choose Controller Bean instance by RequestMapping
I want Spring to create 2 instances of FooController. Requests to /foo should be handled by one of the instances and requests to /bar should be handled by the other instance. I want something like the …
Why does my Timer crashes my android activity when I stop it?
I’m trying to make a toggle button that can stop and replay a Timer, it worked just fine until I added a new method called “Set_BPM”. It starts and it stops correctly, it crashes when I try to start it again after I stopped it. This is the class where I’m using the Timer: And this is how I’m calling
How do I get the Scanner in java to read a string? [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 2 years ago. Improve this question How would I get my program to quit when the user enters q? Is there something wrong with the scanner?
Null pointer exception when using Mockito to mock interface
I’m using Mockito to test the following method: Here is my test: But I keep getting NullPointerExeption for this line: ValueProducerFactory is an Interface and the createValueProducer method signature is as follows: I have a class named CachingValueProducerFactory that implements the interface It seems like using Collections.emptyList() in the test is the problem, but I don’t see any other solution