Generally we use logback framework most of the java based application and this file commonly resides inside class path. Is there any way to externalize t…

In eclipse web project we will run with integrated tomcat. This means it will be enabled with hot deployment.  Generally stopping tomcat will be quick in…

How to convert long to date in Java?. Some case we might receive date's are in long format how can we convert those long format into date Option 1:…

In Java there are many ways to iterate the Hash Map. We need to consider the way it has good performance and less number of looks up in the Map. Generall…

How to combine two war files into single deploy-able war.This can be achieved by using Maven overlay as part of Maven war plugin. Below steps can be used…

SVN has been moved from one server to another server and now we need to change our work space to the new location. This is very simple and straight forwar…

Many java applications uses http or https connection to access the API.This access can be either outside or within the network. In outside network it has …

ResultSset is important element when we are fetching the results from database. Generally we do null check or data exist before accessing the element. Th…

Many of us use SVN as project code repository and we use tortoise SVN as client. In this article we are going to see how to recover the deleted project/br…

In java based application some times application would have suddenly stopped running because of the error "Could not determine buffer size". Ro…

In any linux/unix based application we will get into the situation where we unable to start the application. We will get the below exceptions. Caused…

We can configure start and stop for quickfix sessions,This can be done through settings file. We can also specify timezone to reset the session timings. …

ConnectorServerFactoryBean instance is required to register the MBeans. We can set the dynamic JMX urls for Mbean server based on our preference. We need…

Sending email from google SMTP may failed some times  due to security restrictions. We may be below error. This is because account is allowed to work only…

ASCII stands for American Standard Code for Information Interchange. Each and every character has it ASCII equivalent number.We can use following way …

Null pointer exception is one the Runtime Exception in java.This exception occurs when we try to access null object references values.Lets see the be…

We are getting Generated Serialization Constructor Accessor error because of Garbage collection in java.Due to memory constrain in perm space GC thr…

We used to get this error when we starting our application servers. This error says already there is a process running in the port or your applicatio…

IllegalMonitorStateException is a Runtime Exception and this is thrown when we are try to attempt wait or notify methods without acquiring the lock o…

We can use jmeter to do load test for  any application. In jmeter it is possible to capture browser actions and replay the same actions with number o…