Closed. This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 2 years ago. Improve this question Is it good style to write: (which is obviously far to long for one li…
No suitable driver found for Oracle Database connection
I have small Java Application, which execute every day and checks for data in database using Cronj Schedular and everything works fine, but recently I have observed that, it is failing due to At the same time, when I run my test code to check Database connectivity that works fine without above exception. I…
Declaring initial capaity for a list in java is a bad technique?
I have multiple ArrayLists with the same capacity. I fill these lists by reading a file. I know that one difference between an Array and an ArrayList is that the Array have a fixed capacity while the ArrayList have a variable capacity. You should explicitly specify the array length when you declare it, but th…
Mockito: How do I verify that the array passed to my method contains the right object?
I’m using Mockito 1.9.5. I want to verify that my method (which takes an array as a param) was called in which the array contains exactly one specific object. I’m having trouble figuring out how to do this. I have Unsurprisingly, the second line fails because although the argument, “acct” is the same as what …
NoClassDefFoundError: UnsupportedFileFormatException while using apache poi to write to an excel file
I am trying to write to an excel(.xlsx) file using Apache poi, I included the apache poi dependencies in my pom.xml file. But I am getting the following exception in execution. The code and pom.xml is specified as follows. I am getting the exception in the following line. Code: Pom: Answer I think You’r…
Nested Boolean Expression Parser using ANTLR
I’m trying to parse a Nested Boolean Expression and get the individual conditions within the expression separately. For e.g., if the input string is: (A = a OR B = b OR C = c AND ((D = d AND E = e) OR (F = f AND G = g))) I would like to get the conditions with the
Does a class without methods have a special name?
What is a class without methods called? I’m trying to understand and learn about classes, so i have the following class “Variables” that doesn’t have methods, only fields, like the field “Server” in a folder called “utilities”: then this class is called from a m…
Zookeeper error: Cannot open channel to X at election address
I have installed zookeeper in 3 different aws servers. The following is the configuration in all the servers All the three instance have a myid file at var/zookeeper with appropriate id in it. All the three servers have all ports open from the aws console. But when I run the zookeeper server, I get the follow…
Spring batch FileItemWriter not creating file at correct path
I have a spring batch service containing a FileItemReader,FileItemProcessor and FileItemWriter.When creating the FileItemWriter I have to set the Resource that will be my output file. I am running the batch service on websphere on a Linux machine.The problem is if I set the resource as new FileSystemResource(…
java.nio.file.NoSuchFileException: why nio not creating file [closed]
Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed 7 years ago. Improve this question I am …