Can anyone help me with the stream equivalent code Note:- I cannot make the studentFinalList “final” Answer Some conditions in the code seem to be redundant and may be removed without affecting the logic: StringUtils.isBlank(ep.getName()) && ep.getName() == null may be shortened to ep.getN…
Tag: java
Matching JSON request body based on JSON Path with logical operators in WireMock
In WireMock I am trying to match the request based on the JSON body with path matchers as shown below. But it seems that the logical operators are not supported inside matchesJsonPath expression. Is this understanding correct? What could be a possible alternative solution? Any help will be appreciated, thanks…
JSON data mapping in Java with Jackson
I got stuck in mapping a json into my data structures “the easy way” using just Jackson decorators and I was wondering if there is a way to do this … The json that I try to read has the following structure: So basically every data entity has a “data_info” object (mapped in my cod…
Exception with JPA Query Spring
I want to get List of my objects by jpa query I’m using this code: But I get the exception: What is the problem there? Answer There are some missing spaces at the end of string literals. For example after concat the result is like “…from VzClass vzjoin vz.PHClass…”. It should loo…
MDC related content in tomcat access-logs
Can MDC related content be made available in tomcat access logs in spring boot application. I have gone through lot of blogs but everywhere the contents of MDC are logged to application logs but not in access logs. Is there any way to add them in tomcat access log pattern. Answer Final Verdict is: Access logs…
JPA Entity Class using class object as parameter
I have a class User which has a parameter of another class type ShoppingList. As this… How can i make this ManyToOne relationship while the variable being an array? The idea is to have a User table and another ShoppingList table, so the user can have multiple lists at the same time. Answer This would be…
Reading XML with namespace using Apache Beam XmlIO
I am trying to read an XML file into an Apache Beam pipeline. Some elements have namespaces and the namespace declaration is declared at the root node. I am able to parse the xml outside of Apache Beam using the standard JAXB parser. However, when I use XmlIO.read() function with beam I get the following exce…
unable to retrieve image from mysql through rest api using java
My problem is deceptively simple but I am unable to find the answer. Through Java and JDBI, I am able to retrieve the image from MySQL database and store it locally. But when I try with a rest api, it is giving the error in the attached screenshot. I have searched for this quite a bit but am unable to
Loading XML into DOmSource is adding xmlns=”” to all bean tags
I am trying to programmatically edit an XML file by loading it into a Document object and manipulating it there. This portion on the program works however if I load the XML into either an InputStream or write it back to a file, all the bean tags have xmlns=”” attribute added to them. So if before …
Iterative Inorder Traversal B-Tree
My end goal is to do a findKthElement function and the only way I can think of is to perform iterative inorder traversal so that I can keep a counter, which obviously doesn’t work if its recursive. I have tried my best at an implementation similar to a BST but its not working, just printing the same thi…