Map of maps – how to keep the inner maps as maps?
Here is the updated code that seems to work, you need to type the map of maps as <String, Object> since mp isn’t a string you can’t do <Object, String>.
java
Http status 401 This request requires HTTP authentication (). in tomcat 6
I have developed a web application if i run the application in tomcat 6 it asks for username and password but after 3 attempsts it shows i want to get the remote user’s user name and password what should i do for it? this is my servlet code should i change something in my server’s … Read more
How Do I Implement an Insertion Sort Method for A Generic ArrayList?
I am meant to create a simple insertion sort method which sorts a series of generic names into alphabetical order. This should be simple, and I have already reviewed many other examples of insertion sort online, including on this site, yet I still cannot seem to obtain the correct output despite comparing my code, line-by-line, … Read more
What is the purpose of Java DOT operator?
Can somebody tell me what Java DOT operator actually does? For example: I want to know what is . operator doing in above code when I do Person.great() or Person.value?
How does paintComponent work?
The (very) short answer to your question is that paintComponent is called “when it needs to be.” Sometimes it’s easier to think of the Java Swing GUI system as a “black-box,” where much of the internals are handled without too much visibility. There are a number of factors that determine when a component needs to … Read more
Downloading Java JDK on Linux via wget is shown license page instead
Works as of December 23rd, 2021 for JDK 17 Works as of July 27th, 2021 for JDK 16 Works as of November 5th, 2020 for JDK 15 Works as of 07-11-2020 for JDK 14 PS: Alf added this ( me ) 🙂 this, I couldn’t figured out how to just commented at the end… Enjoy … Read more
Use CSS in Java Applications
You should look up javafx. You can attach a css file to a GUI. it is fairly easy to use. I can give you some example code if you want. These are some good tutorials on how to use it: https://www.youtube.com/watch?v=FLkOX4Eez6o I use eclipse to create a css file right click the project -> select … Read more
Mockito : doAnswer Vs thenReturn
I am using Mockito for service later unit testing. I am confused when to use doAnswer vs thenReturn. Can anyone help me in detail? So far, I have tried it with thenReturn
Spring boot: Unable to start embedded Tomcat servlet container
Try to change the port number in application.yaml (or application.properties) to something else.
How to enable the Java keyword assert in Eclipse program-wise?
To be specific: Go to Run->run configuration select java application in left nav pan. right click and select New. select Arguments tab Add -ea in VM arguments.