Whenever you write a Java class in Eclipse which implements java.io.Serializable interface, you'll get this warning:The serializable class XXXX does not declare a static final serialVersionUID field of type longWhy do we need serialVersionUID? Whenever we implement java.io.Serializable interface, we explicitly tell JVM that this class can be serialized. Meaning, we might convert object of this ...
Sometimes Eclipse gives weird errors that you have no clue why is coming. For example, recently I got this strange error in eclipse's Problems view.This project needs to migrate WTP metadataTo remove this error, all you have to do is to re-validate the project.Select the project that you want to validate. Right-click the project and then ...
If you are a regular Eclipse user than you might have got this error many times. The error simply says, "you've made changes in files in your workspace from outside eclipse". The simplest solution would be to select the project and press F5 (Right click -> Refresh). This will re-sync any external changes to the file system and eclipse would now know what exactly is ...
While using Maven as build tool in our project, I found it very difficult to create a Dynamic Web Project which supports
Maven dependencies and can execute in Eclipse! I have seen lot of people using Maven just as build tool and for local setup uses jar files in some /lib directory. I wanted to remove this dependencies on local /lib for jar ...
If you are using Eclipse as your primary development IDE, then you may want to know about Code templates in Eclipse. Code templates are certain user defined (some are available by default) templates which can assist in rapid code writing. Not only code templates increase your code writing speed, but it also add consistency across the code.To add a code template, all you need to ...
Ever wanted to hide all those closed projects in eclipse? Well, here is a simple trick that you may not know already.Imagine your Eclipse workspace is filled with many projects that you created in past just to test some small functionality. Now you are done with these projects and hence you have closed it. Eclipse by default show all the closed projects in Project ...
Lot of time when I am working in Eclipse, it get crashed due to some or the other reasons. Most of the time this is because I have opened a lot of applications that I am working on and this takes a bit of memory. So finally everything just get hanged and does not have enough RAM to work on. Thus, Eclipse just get hanged ...
Recently while running Tomcat under Eclipse for one of the web application I was getting Java Heap memory related error java.lang.OutOfMemoryError. What needs to be done here basically is to increase the
jvm heap size. So for increasing the JVM Heap Size of Tomcat in Eclipse we have to set few VM arguments of the tomcat.Follow ...
Database Connection Pooling is a great technique used by lot of application servers to optimize the performance. Database Connection creation is a costly task thus it impacts the performance of application. Hence lot of application server creates a database connection pool which are pre initiated db connections that can be leverage to increase performance.Apache Tomcat ...
Eclipse have been my favorite Java IDE since I started coding in Java. Shortcuts makes life very easy when you are working with any IDE. Eclipse also comes with lot of shortcuts that makes like of a developer easy.Following are few shortcuts of my choice.Ctrl + Shift + O : Organize imports Ctrl + / : ...
