Tag: java

Sort function in Java collections

If I have following list of student objects, I need to sort these objects in following order. I have tried following code, I am getting following result. But I need all zero’s should be at last. Answer A better way to sort them with 0 higher than any value is: This will correctly handle the case where obj.Rank=Integer.MAX_VALUE. If your

Jackson serializes a ZonedDateTime wrongly in Spring Boot

I have a simple application with Spring Boot and Jetty. I have a simple controller returning an object which has a Java 8 ZonedDateTime: In my RestController I simply have: I was expecting the ZonedDateTime to be formatted according to the ISO format, but instead I am getting a whole JSON dump of the class like this: I just have

To display a Base64 image in AngularJS

I have inserted a Base64 image to a database using this Java code: But if I try to display the image in AngularJS using it, it is not displaying the image. In SQL Server I have saved my image as varbinary(max) and in AngularJS code, But I am getting only bytes with a message like this: Where am I going wrong?

Limit login attempt in Java

I am trying to limit the maximum login attempts to 3. However, my code below uses all the attempts before the user can get a chance to press the login button again. How would I fix this? Answer Whenever, the executeLogin() will be invoked, the previous value of totalAttempts will be erased and it will be again initialized to 3.

Spring boot mapping static html

I want to create spring boot web application. I have two static html files: one.html, two.html. I want to map them as follows localhost:8080/one localhost:8080/two without using template engines (…

Google PageSpeed Insights API Quota

I was checking Google PageSpeed Insights API and I have question related to the quota but I cannot find answer for it on the web or on the google docs so appreciate if anyone can help or guide me in this point. It is mentioned on the quota for this service that: In this case, If I am using the

tableview is empty when i add an item

I need help with an empty tableview. When I put items in an ObservableList and do setItems with this list, the tableview doesn’t show the items from the list. I have included Minimal, Complete, and Verifiable example(I think). Main class. Afegir Class. And subvencio class. Edit: @James_D : I use an instance of one of your controllers because if i