I am trying to set 2 conditions that have to be checked inside the Condition field of selectOutput. If the entirety of the first line is false, I want the entirety of the second to be checked. However, using the code below, I am returned the error that only shows for the first instance of == of the second statement:
Retrieve a list of cart items by passing in a user
A typical shopping cart problem. The CartItem class is being injected with a User class and Product class. I already have a user, and I need to pass in the user to return a list of cart items. But the front end failed to receive it. The browser console returned 400, and Postman returned 405 for the back end. In
org.postgresql.util.PSQLException: ERROR: column is of type date but expression is of type integer: cannot write date into postgres using java
I’m trying to insert a record inside my table but I cannot insert any values into the Date column. This is the code I use to make an insert: How I call this function: The fullstack trace I get: Answer The correct solution to this problem is to use a PreparedStatement – do not concatenate parameters into SQL strings. Your
Reading a file and saving each line into a variable
For a project of mine, I’m trying to read a file of Integers and save each line into a file. Each of the files I’m reading have a different amount of lines. The file would look like 17 72 61 11 63 95 100 Is there a way I can use a loop and save the value in a different
Spring Boot: using SpEL collection selection from YAML in @ConditionalOnExpression
I have a Spring Boot application with a YAML configuration that contains a feature list like this: I would like to use @ConditionalOnExpression to conditionally initialize beans related to those features, identifying them by keys. Since “features” property is a list, it seems I need collection selection to do this. I have tried these two options for the annotation’s value:
Why is the or-Matcher not working in my Mockito verify?
I would like to verify that either of the following two method calls get executed once: I have tried the following: But running the test method resulted in the following error: When I just test for a single method call as follows.. ..it runs fine and my test is always successful when logWarn() gets called with argument “My 1st Warning
Run code without transaction in transactional mehod spring
I have service like this: How can I run method2 without transaction or in new transaction? Can I run in my controller class this 2 method like this: Answer @Transactional is powered by Aspect-Oriented Programming. Therefore, processing occurs when a bean is called from another bean. You can resolve this problem by self-inject create another bean.
Java Socket how to simulate disconection from server
I have a Java program with a client and server sockets, there I want to test that an exception is raised after the server is down. This is the server: This is the client: I start the server socket thread with: And the JUnit test is this: However the test is not performing as I intended, I thought that this
Why does jshell show this number?
I am learning java and this logic makes me feel confused. Isn’t here i=20(+1)+20(+1)? Why 41 instead of 42? See this code run at Ideone.com. Answer Effectively, the expression i=i++ + i++; is equal to i=i++ + i;. Why? The latter i++ result value is never used and is not propagated. The result of the postfix addition i++ is used
How to add health endpoint in Apache Tomcat 9?
I am using Apache Tomcat 9 server as a Maven dependency in my project. It is working fine and now I need to add a health endpoint so that it will return 200 OK if everything is running fine. I came to know about HealthCheckValve (https://tomcat.apache.org/tomcat-9.0-doc/config/valve.html#Health_Check_Valve) option in Tomcat 9 which is helpful. But I am not been able to