I am trying to make a JUnit test that checks whether the inputs for an Appointment object are valid or not. I have finished making all the tests, but whenever I run the test, all of the tests pass except for one. For some reason the test testDateInThePast() is failing. Can someone point out the problem? Here …
Tag: java
How do I check if variable exists in a jsp page for post in index?
well this is what I want to do. I have a website that is supposed to show post created from an Admin dashboard in index page using jsp as language, I did this in Php but I can’t find how to do it in jsp in this case, how can I check if the variable “pageno” exists to begin with?
How to throw custom exception when using Spring webclient exchange method?
I have created a reusable method that returns the headers, status, and body of an HTTP call using the Spring webclient’s exchange method. I want to capture the 4xx and 5xx errors in the method itself and log the response body. However, i am not able to return/throw custom exception when 4xx or 5xx error…
Jackson serializing: Get list of processed objects
For a special case, I need to know which “source objects” of the object tree Jackson processed during serialization. I think there is some internal list, because Jackson might reuse already serialized objects if they are referenced multiple times in the object tree. Can I get this list? Or is it p…
Minecraft Client Server Login Protocol – Malformed public key bytes
I was able to get the server list ping to work fine but when I moved on to the login protocol, I’m having some issues. After some analysis with Wireshark it looks like its sending the handshake and login packets in the same packet. I’m starting off with a offline login. Fom what I understand from …
Spring data JPA: Three entities ManyToMany relations, query duplicate result with findById
User.java UserRole.java RolePermission.java JDK:17 SpringBoot:2.7.4 findById and findBy are also generate different structure SQL. findById uses left outer Join. findByName uses subquery. the user only have one role, the role have three permissions. if use findByUsername It will return the user info correctly…
Jsoup HtmlToPlainText function adding extra new line
If the text is already plain text and passed to the function new HtmlToPlainText().getPlainText() then the new line character is getting added to the result text. It looks like Jsoup is doing some formatting and adding a line break. I tried outputSettings.prettyPrint(false); but it is not helping. Input text …
IntelliJ: Unresolved reference, but gradle build still succeeds
I have a Java library https://github.com/skycavemc/skycavelib which I want to use in a Kotlin project. This is the build.gradle where I have the library as dependency: I also made sure I have a file named local.properties in my project where I set gpr.user and gpr.key correctly. The authentication works and t…
@Column settings in case of externally managed database schema
When externally managing the database schema (e.g. with Liquibase), in addition to specifying the Liquibase changesets, you have to help Hibernate understand your data structure using JPA annotations. While some annotations concern higher level abstractions of the underlying data like @Embedded or @OneToMany,…
How to merge methods with unrelated parameter types into one generic one?
For java/C# There is my code: Can I merge AddTable and AddCup into one method like Add<T> like this: The problem is that there are too many if else. Do you have any better suggestions? Answer Name the methods the same so that they will be overloads of each other: The compiler is smart enough to call the…