Category "java"

Android: set just one padding of textview programmatically

I want to set the top padding of a textview programmatically. I know you can do this with the method setPadding(). But the problem is that this method requires

How to export XML format in Jasper Reports

I want to export data in xml format which needs to look like this using jasper, I downloaded the jaspersoft studio but there only pdf and csv formats available

Java Stream: divide into two lists by boolean predicate

I have a list of employees. They have isActive boolean field. I would like to divide employees into two lists: activeEmployees and formerEmployees. Is it possib

Debugging maven tests with IntelliJ

I've read multiple variants of this question (sorry for adding another), but none have offered a working solution. I am trying to debug a failing test in the a

404-not-found-while-running-spring-boot-rest-api

While running springboot restservice application got 404 error. I am using spring boot, jersey rest. I have tried GET requests http://localhost:8080/dunames bu

JDBC Derby driver not found

I've followed the JDBC tutorial at: http://docs.oracle.com/javase/tutorial/jdbc/basics/gettingstarted.html, and managed to build and create my own JDBC database

Port android app from Android Studio to Microsoft Visual Studio

I have an app written in Android Studio, that I want to work on using Visual Studio. Is there a way to import my project into Visual Studio?

java.lang.IllegalArgumentException: input == null! when using ImageIO.read to load image as bufferedImage

This is a question that has been asked like 100 times on this site, but I have looked at all of them and even though they all were solved, none of the solutions

Is tagging a form of data mining?

I am implementing a small CRM system. and the concept of data mining to predict and find opportunities and trends are essential for such systems. One data minin

Could not transfer artifact org.apache.maven.plugins:maven-surefire-plugin:pom:2.7.1 from/to central (http://repo1.maven.org/maven2)

I have created a new maven project in SpringSource Tool Suite. I am getting this error in my new maven project. Failure to transfer org.apache.maven.plugi

Unknown version of Tomcat was specified with tomcat -9.0.37

I downloaded the windows service installer of version 9.0.37.But at the time of connecting tomcat with eclipse IDE which is of version 2020-06 it is showing er

Merging three threads in Java

I am trying to create few flows in java, my program must to create 3 threads and 1 main thread, and than stop. I created class with implemented Runnable class N

Update elements in a JSONObject

Lets say I gave a JSONObject { "person":{"name":"Sam", "surname":"ngonma"}, "car":{"make":"toyota", "model":"yaris"} } How do I update some of the values

spring boot doesn't shows custom error pages

I added spring-boot-starter-thymeleaf dependency to my project that using spring boot 2.3.1.RELEASE and placed error.html file inside src/main/resources/templat

How to handle "org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error" in Spring?

I'm adding an API to an existing Spring Boot project using @RestController. My Spring Boot experience is: This is my first time using it. The RestController wor

Java 8 Stream - .max() with duplicates

So I have a collection of objects that have a step variable that can be 1 - 4. public class MyClass { private Long step; //other variables, getters, s

Attach the Source in Eclipse of a jar

I added a Student.jar into my Build Path in my eclipse like this- Right click on the project->BuildPath->Configure Build Path->Libraries->Add

Sorting an array of integers in descending order and relating it to its corresponding string array

I am trying to output the names and corresponding scores in descending order. Having an array of strings and another array of integers, I am trying to relate th

Finding the middle element(s) of an array in Java

Given an array of integers, I need to return a new array containing the middle element(s) from the original array. Specifically, the result will have one elemen

org.eclipse.core.runtime.CoreException: Module named '_auto_generated_ear_' failed to deploy

I was following this tutorial. And I followed the steps. But I am getting this error: org.eclipse.core.runtime.CoreException: Module named '_auto_generated_e