I’m removing Powermock from the project I’m currently working on, so I’m trying to rewrite some existing unitary test only with Mockito (mockito-core-2.2.28). When I run the test, I have the following error: org.mockito.exceptions.base.MockitoException: Cannot mock/spy class com.Externalpack…
native query join in spring data
I have the class: I want to know if it’s possible to use a native query join in spring data JPA and if the result of query was correctly mapped into entities like the above example. Can someone show me a complete example to user this. I must to use a native query in my case and I am not
Latency in Iterator or foreach
i have one ArrayList that has a 1000 Insert SQL statement. but rather in execution time the latency of Iterator or (enhanced for loop) for this ArrayList take 1 minute . and my JFrame is not responding in this period. what can i do? Thanks Answer foreach internally uses iterator only, in order to handle bulk …
Keytool EC KeyPairGenerator not available
When I use keytool to generate a key with ECC, I get this error: Error keytool: java.security.NoSuchAlgorithmException: EC KeyPairGenerator not available Then syntax used to generate a key is: I have this Java version: Answer I solved the problem by reading the following article (linked by the user @QuakeCore…
How to set sourceCompatability to javaVersion.VERSION_1_8
I installed jdk1.8.0_112 and write code below in build.gradle i received this error Can anyone help me? Answer from https://developer.android.com/guide/platform/j8-jack.html, you also need following: UPDATE Note that Jack toolchain is now deprecated https://android-developers.googleblog.com/2017/03/future-of-…
Reading whole Google Spreadsheet with Sheets API v4 Java
I would like to read a Google Spreadsheet like described in the Java Quickstart https://developers.google.com/sheets/quickstart/java The Quickstart explaines how to read data from a give range But I have the problem that I do not know the Range of the Spreadsheet. The number of columns can change. So how can …
How to perform unbuffered input in Java (if at all possible)?
Java Beginner here. When we input a string, we have to press the enter key to let the program know that the user has done inputting. Is there a way where we use another key instead of enter key (for example a question mark key) to input a string? Answer Ever heard of something called a “buffer”? I…
Comparing two linked lists and returing a list with maximum values
I am planning to write a Java Function that takes two linked lists. Both have the same size. I want to return a new list that contains the maximum of the data found in the corresponding nodes of the two lists passed to my function. However I am stuck in filling the new list. I came up with this: I
Using Jupyter notebook for Java
I’ve used the Jupyter notebook quite a lot for my Python projects, but now I have to work on something in Java. So I was wondering if I could get Jupyter to work with Java? After some searching I think I understand that you can install different kernels for other languages, with a list of kernels here. …
How to set logging.path for spring-boot apps?
spring-boot provides several logging.* settings that can be applied in application.properties, like: logging.level.=DEBUG logging.file=myfile.log logging.path=d:/logs/ Problem: myfile.log is …