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I have the following source code in Java:class Outer {     Nested nested;     Nested getNested() {      &nb

Suppose you need to repeatedly execute some test method in your unit test case, for example, you would like to test getPrice based on the first set of test data 5 times in test method test1() while fo

Suppose I have four test cases in my project, the total methods to be tested:Based on the blog Run only given sets of your unit test via @Category, it is possible to organize test methods within

Suppose you have a large number of unit test cases and you don’t want them to be executed all at the same time during Maven build. You can simply achieve it via annotation @Category.(1) Create empty c

In order to introduce the usage of this annotation in JUnit, I use an example to demonstrate.I have a very simple price calculator:public class PriceCalculator {    &nbs

When I am creating unit test for one of my Java project A, I try to have a look at the source code of this annotation:Once I press Ctrl and click, I see this message below. The “Attach Source” button

Suppose you have a running Java process and you would like to inspect its running status, for example how many object instance are created or memory consumption status, you can use some standard tool

In order to avoid unnecessary query on database it is a common pattern to define a cache in application layer to cache the query result from database. See one example below. Here the application cache

(1) Install WAMPServer:Change Apache server default port 80 to another port:configuration: \bin\apache\apache2.4.9\conf\httpd.conf(2) In Eclipse, specify PHP Executable:debug setting:Create a new debu

Today I found a useful free software called “SourceMonitor” which can help to calculate and monitor the java code ( and other programming language like C++, C# etc ) complexity.For the definition and

Recently I am trying to find a handy tool to measure the performance of my Java application and finally I think the VisualVM provided by JDK is the ideal one. This blog is written based on JDK1.7 + Ec

Issue: When you try to create a new Opportunity in Fiori, you meet with the following error message in UI:Click “Show Details” hyperlink:Click F12 to open Chrome development tool, you could see more d

In our JAVA development if there is no source code attached for a class like below,We have no chance to view its source code.However you can use an open source tool, JAD, to decompile the class file s

This blog can be used as a very simple tutorial for those guys who are new to JCO. It demonstrates how to download and configure the JCO in your laptop. A simple consumption from JAVA side to call a r

Today my colleague tells me with one tip regarding Eclipse auto completion setting, which I think is useful in my daily life.There are lots of standard classes and those class/method created on my own

(1) start Jetty server under debug mode via mvn jetty:run(2) In Eclipse, create a new Debug configuration->Remote Java ApplicationSpecify Host as localhost and port 8000:Click debug button:You shou

Recently I am working on a co-innovation project with one local partner in China. They will provide a Face Recognition solution which consists of a set of hardware & software. Once a person is rec

In my previous blog JMeter beginner – how to use JMeter to measure performance of OData service accessed parallelly I have demonstrate the way how to generate a large number of parallel requ

I am the trainer of one standard course “Programming Language Concept” within SAP and there is a set of concept Covariance and Contravariance, which has only built-in support by a subset of programmin

Recently I meet with an issue using Spring which finally turns out that my bean is initialized multiple times although it is expected to be a singleton. As a result I look into the possible scenario t