Spring Boot + MongoDB Id query

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I have a Spring Boot application combined with MongoDB as the persistance layer. I have the following structure: public class Resource { @Id public String Id; … } I also have a ResourceRepository:…

Mockito thenReturn returns null when coming from generic function

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I want to mock the ResultSet in a class, whose parameters come from a generic return function (getSQLValue): public class MyClass{ TableClass clsTableClass; public void getResults(Integer …

NavigationView header image

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I need to change NavigationView header image from fragment, but i am getting error. Someone can tell me what i am doing wrong?. Thank you for helping))) java.lang.NullPointerException: Attempt to …

Is there any java example of verification of JWT for aws cognito API?

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I am using aws cognito user pool, after user signed in, I got an id token at my single page application, which is expected, then for each request, I need to verify the id token at my backend rest API, …

Deserializing a list of ints with Spring WebClient

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I’m trying to communicate with a Rest service that returns a simple JSON array of ints, e.g. [1, 2, 3, 4] I have the following code to make the call via WebClient: client.get() .uri(“/…

Graphviz’s dot tool on Windows

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I’ve created a java program to write a .dot file as I’m using Graphviz software to visualize some data. There is nothing wrong with a code itself, but when I try to execute the following command in …

Tags: java

Creating two objects with same name in Java


I have a class name Planet and I am making objects in main. Planet planet1 = new Planet(“High Temperature”,”No Water); Planet planet2 = new Planet(“Low Temperature”,”Ice”); However, I saw my …

Lemmatization with apache lucene

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I’m developing a text analysis project using apache lucene. I need to lemmatize some text (transform the words to their canonical forms). I’ve already written the code that makes stemming. Using it, I …

ExtentReports – screenshot not in the report – broken image

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I’m trying to add a screenshot to my ExtentReport HTML file, but for some reason, the image is not there even though it DOES exist and the console shows that it’s looking at the correct place (href is …

How to disable PDFBox warn logging

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I have a simple java console application. pdfbox is utilized to extract text from PDF files. But there is continuous info printed in console: 十一月 29, 2017 9:28:27 下午 org.apache.pdfbox.pdmodel.font….