In some cases you will not be able to change the eclipse project facets through dialog boxes. It would happen many times when you want to downgrade your versions of facets used by your eclipse project. For example, If your current project configuration is Dynamic Web Module 3.0, if you try to downgrade to 2.5, …
Get URL Content using Java
This example shows how to download a URL content to your local machine. If you look at the below example, it simply takes an URL as the input and get the content and save it to the local system. File Upload and Download Using Java
How To Increase Heap Size in Eclipse?
If you get the error java.lang.OutOfMemoryError: Java heap space while running Java applications, it means that your Java application environment don’t have the sufficient space to store the values needed for your application. This could be because of the following reasons: By mistake, you have set the less memory for your Java environment (or) Your …
Convert Java Project to Web Project in Eclipse
This tutorial is for adding a simple tips to the Eclipse developers. When you have a Java project already created in your eclipse, now you want to convert that same project to a Web project instead of creating a new project. We can do that easily using the property window for that specific project. 1. …
Deployment Descriptor in Different Servlet Versions
Servlet specifications evolved over the period of time. There is lot of improvements has been added to the web deployment descriptor as part of the new versions. It is important for the Java developers to understand the new elements in the web.xml and utilize the added features. In this tutorial I will summarize the sample snippet …
java.lang.ClassNotFoundException: javassist.ClassPath
When you work with Hibernate or Thymeleaf, it is probably that you would get the below exception. It may happen any other projects too if that library has the dependency with javaassist library. I have got this exception when I started developing my first Hello World application using Thymeleaf template framework. The reason for the …
java.lang.NoClassDefFoundError: org/objectweb/asm/ClassVisitor
When you work on Hibernate, Jersey or any third party API, most of these APIs have the dependency with the asm.jar file. ASM is an all purpose Java bytecode manipulation and analysis framework. This is a common framework used by many of the thrird part frameworks internally, that is the reason many projects have this …
How to Attach JDK source with Eclipse IDE?
This tutorial explains about how to attach JDK source code to your working environment. When you want to look at particulat source code, we can use CTRL+Click on the class name to refer the source code. However, by default developer can not refer JDK’s core Java files. It is referenced as the class files and …