I use Windows 10 and jre1.8.0_51. I don’t know why when I start Eclipse it always displays an alert message “An error has occurred. See the log file null.” And I cannot open Eclipse thereafter. I tried to search Google and have no best solution. I uninstalled JRE and installed it again, but …
Tag: java
Externalizing the location of logback.xml in Spring Boot using application.properties
How can I customize the location of logback.xml in Spring Boot using application.properties? I tried below but is not working. application.properties It is working if the logback.xml is located in the resource folder, but not working if it is located outside the project. It is also working if the I supply as …
Apache Camel bean parameter binding issue with Spring DSL
I am running into a strange issue with Apache Camel and Spring DSL. Here is an excerpt of my Spring defined route: Everything works fine up until the last line that I posted. The extractDocumentRootOid(Exchange exchange) java method is executed and the result is stored to the documentRootOid header. The getOr…
JAVA best practice unit testing with JUnit
I am currently using the following method and unit test for the method. I think the test could/should be broken down into more tests but I’m not sure how many tests to write for this or what the more important parts are especially considering the method deals with establishing a Connection, using sql qu…
netbeans Run error :Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.2.1
I’m very new to net-beans 8.0.2 and want to run java example but theres error below after Run: and this is the pom.xml : am i need to install something? any help appreciated. -thanks edit: turn off net-beans and turn on anaconda solved the problem. Answer That error message will be displayed whenever it…
Apache Commons IO File Monitoring vs. JDK WatchService
I need to develop an application that will process csv files as soon as the files are created in a predefined directory. Huge number of incoming files is expected. I have seen applications using Apache Commons IO File Monitoring in the production. It works pretty well. I have seen it processing as many as 21 …
Android: checking a button is enabled
I am having problems testing my app. I created an espresso test which is supposed to fail, since whenever I launch my app in the emulator, I get the expected behavior. There is my test: When launching the test, nothing is reported, whereas nextQuestionButton should not be enabled upon clicking the radioButton…
Jackson Not Overriding Getter with @JsonProperty
JsonProperty isn’t overriding the default name jackson gets from the getter. If I serialize the class below with ObjectMapper and jackson I get As you can see the JsonProperty annotation has no effect Putting @JsonProperty on the String itself doesn’t work either. The only way it seems that I can …
Convert double to float in Java
I am facing an issue related to converting double to float. Actually, I store a float type, 23423424666767, in a database, but when we get data from the database in the below code, getInfoValueNumeric(), it’s of double type. The value we get is in the 2.3423424666767E13 form. So how do we get a float fo…
Lombok @Builder not initializing collections
I am using Lombok’s @Data and @Builder annotations like this: When I create a new Movie using the builder, without specifying any actors, I would expect Lombok to initialize my List to Collections.emptyList(). But this does not happen: In the documentation for the @Builder annotation, it is stated at li…