Am very new to spring and JUnit. Am trying to run a simple JUnit test case for spring service class, but it fails and I get this exception.I didnt write any test yet, but trying to run through before implementing. Using tomcat v7.0. And I dont think have any spring conflicting versions. Please help. Where else do i need to
Tag: java
Java Server Socket transfer String to web socket
My goal is to set up a connection between a Java Server Socket and a browser (using web sockets). So far, the connection works, but my data streams do not. I would like to send a String from the …
Functional style of Java 8’s Optional.ifPresent and if-not-Present?
In Java 8, I want to do something to an Optional object if it is present, and do another thing if it is not present. This is not a ‘functional style’, though. Optional has an ifPresent() method, but I am unable to chain an orElse() method. Thus, I cannot write: In reply to @assylias, I don’t think Optional.map() works for
Websphere liberty profile error: 404 SRVE0190E
What could be the reason for the error: Error 404: SRVE0190E: File not found: /SimpleServletPath I am deploying in websphere liberty profile server. I can’t reach my admin console login page I can reach my welcome page on my websphere liberty profile server but can’t do so after creating a servlet. That’s when the above 404 error comes up. There
Finding closest number to 0
I have an array of integers, and I need to find the one that’s closest to zero (positive integers take priority over negative ones.) Here is the code I have so far: Currently I’m getting a result of -2 but I should be getting 2. What am I doing wrong? Answer Sort the array (add one line of code) so
Spring @Transactional on one service method spanning over two Hibernate transaction managers
I was wondering if it is possible to use two transaction manager in one service methods. Because due to the limitation of client’s mysql db configuration, we have got 2 different datasources within one database, i.e., one user/pwd/url per schema. Thats why i have to configured two transaction managers. Now I got problem when it comes to the service implementation.
Handle optional parameters in QueryDSL
I am using QueryDSL with SpringData. I have Table say, Employee and I have created entity class say, EmployeeEntity I have written following service method As in above I commented the NPException. How to use QueryDSL for optional Parameters in QueryDSL using Spring Data? Thank you 🙂 Answer BooleanBuilder can be used as a dynamic builder for boolean expressions:
How do I convert from YAML to JSON in Java?
I just want to convert a string that contains a yaml into another string that contains the corrseponding converted json using Java. For example supose that I have the content of this yaml in a String called yamlDoc: I want some method that can convert the yaml String into another String with the corresponding json, i.e. the following code should
Add interval to a datetime
I want to achieve a similar operation in java: What’s the best approach to express this in Java given the following constraints: The datetime is a formated string. The interval is an integer. The calculated time should be also a datetime formatted string. Answer You should work with “Date” objects, which basically represent an instance in time (number of milliseconds
How to share code between two projects?
I have two Java projects called A and B. Both of them are web apps deployed as war files. I created them in Eclipse workspace separately. Project B uses a class in project A named MusicMapper. I added the project A to project B’s build path in Eclipse as suggested in this post. So now project B can compile without