Java Virtual Machine, An inside story!!
Java Virtual Machine, or JVM as its name suggest is a “virtual” computer that resides in the “real” computer as a software process. JVM gives Java the flexibility of platform independence. Let us see...
Java Tutorials, Tips & Tricks
Create JAR file in Java & Eclipse
[ad name=”AD_INBETWEEN_POST”] Let us see how to create a JAR file using Java’s jar command as well as using Eclipse IDE. The JAR file format is based on the popular ZIP file format. Usually...
Implement LDAP authentication in Tomcat & JBoss server for Java app
In this article we will explore the ways to implementation of LDAP (Lightweight Directory Access Protocol) authentication in Tomcat as well as JBoss server. First let us see briefly what LDAP is. Introduction to...
RPC in Javascript using JSON-RPC-Java
Remote procedure call (RPC) in javascript is a great concept of creating rich web applications. First we will see some background about RPC using JavaScript Object Notation (JSON). See following quote from Wikipedia entry...
Creating ZIP and JAR Files in Java
ZIP files offer a packaging mechanism, allowing multiple files to be bundled together as one. Thus, when you need to download a group of files from the web, you can package them into one...
Apostrophe creating problem in properties file in java/struts
I encountered this problem with message resource property files in Struts. The problem is: I have an entry in property file where in it takes few arguements {0}, {1} etc. Now when I put the...
Files-Directory listing in Java
This example lists the files and subdirectories in a directory. Traversing the Files and Directories Under a Directory This example implements methods that recursively visits all files and directories under a directory. // Process...
UnsupportedOperationException while removing or adding elements from List
Problem statement: While running following code, UnsupportedOperationException is thrown both at .add() and .remove() method. What is the problem with the code? Solution: By the time you get to the remove(i) statement, list is...