I want to execute my Twitter crawling using Java importing data to MySQL. My problem is when I set parameter for getGeoLocation, which contained latitude and longitude, then I found something error. The output said it is hard to specify for parameter 4 (geoLocation): Many thanks for any comment! Answer Your q…
Tag: java
@Data annotion not working to set the value in Java
I have this POJO class: I am trying to set the value of orderNbr from a different class. I am trying to update the value of orderNbr in my XML output to 89898 and I want to do it using @Data. But when I am doing fo.setOrderNbr(89898989)I am getting a compile time error as Error:(56, 132) java: incompatible ty…
Unable to create FileWriter
I am trying to create a FileWriter instance pointing to a folder were everyone has write access: And I am getting java.io.FileNotFoundException with detail message: The folder exists and if I stop in debugger and evaluate expression below it always returns true as it should: I don’t understand what is g…
Java problem inheriting interface implementation when extending a class
I am struggling to get an interface implementation to be inherited in another class: I have a generic class that requires compareTo to be implemented. The class is called GenericList and is implemented as: I have a User class that implements compareTo: I have no problem creating a GenericList of Users: If I c…
Graceful shutdown of multithreaded java server using executor service
I refactored a single-threaded server to be capable of multithreading and accepting multiple clients at the same time. To do so, I spawn a new ClientHandler thread for each new client and submit it to an ExecutorService. I want to initiate a server shutdown by entering a new line to System.In. However, I am n…
Can Make Redis server return NULL or False instead of JedisConnectionException?
We are developing an application that uses the Redis server as a cache server. So what We do are when a client request API it first go to Redis to get data if there is no data it returns null so the second step go to the MYSQL database to get data, But the problem when we lose the Redis
Artifactory + Custom Gradle Plugin Programmatically (2022)
I’m trying to create a custom gradle plugin (100% java) which will automatically configure Artifactory, avoiding the need of the following DSL: I’m trying to re-create @agrosner own solution (from https://stackoverflow.com/a/25669431/1880280) but I’m missing “ArtifactoryAction”. …
How to get java to recognize a certain group of random integers
It’s slightly hard to explain but I’m making a basic system were it would have a random chance to output something else, I have a single integer that can be different, and need java to be able to know when this said integer is going to be 580-599. I’m Completely stuck and I’m new to ja…
Why list.contains(null) throwing null pointer exception?
I have List<Long> countriesList which contains Long values which are country ids. Now I am iterating over some List<UserRequests> list by using streams. I tried to debug by evaluating individual statements. I have made sure countriesList have some data First part CollectionUtils.isNotEmpty(countri…
How to create RESTful Web Service with Spring Boot and Apache Camel?
I’m learning Apache Camel in Spring Boot project and I try to create a Retful Webservice and the service is starting but the problem is that I get 404 when I call the endpoint. I created this class to hardcode some data: application.yml pom.xml The serviceis starting and this is the console log: But whe…