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Webinar Best Practices For A Webinar Experience Your Audience Will Love
The web conferencing technology has been getting a lot of attention lately, and for good reason. With global lockdowns and social distancing norms in effect, video conferencing has emerged as an economical way of staying in touch with office colleagues, friends, and family members. However, if that’s all you are using this technology for, you may not fully understand what is web conferencing and its immense potential. For instance, lately, web conferencing technology is being used to deliv...
WEB CONFERENCE,WEBINAR 2020-11-07 04:19:52
Google open sources its Collaborative IDE
July 9, 2012 news, Google engineer Scott Blum published an article on Google+ which revealed that Google would open source the Collaborative IDE. The project was named "Collide" (collaborative IDE), which is a Web collaborative code editor. Google hopes that Collide can serve as a catalyst for improving the state of web-based IDEs.Caution Collide does not have any proper auth, SSL support, or user account management just yet. Please consider that fact when running instances that expose important...
Google,Open source,Collide IDE 2012-07-09 10:55:20
Android socket programming example
Socket is a kind of interface for different sides t communicate, it usually identified by an IP and a port. There are many server side software on a server and they would provide different service. Each server many create some sockets and bind them to some ports so that clients can listen to. Software on the Internet will exchange data though a bidirectional connection established. Each end of the connection has a socket created. In Java, Socket and ServerSocket are in java.net package, ServerSo...
Gracefully exiting from console programs in Ruby
Imagine you write a CLI program or a Rake task which loops through some data performing some work on it. You run it and then you remembered something. You’d love to kill the process with ctrl-c, but that will raise an exception somewhere in the loop. What you want is for the iteration to complete and then you want the program to quit. You could handle the Interrupt exception or add some conditions. But how about a cleaner and reusable way? No problem - you can trap signals, which...
Ruby,Exit,Command window,Console,Graceful 2012-03-14 13:42:16
Different types of keystore in Java -- PKCS11
PKCS11 keystore is designed for hardware storage modules(HSM). It's an interface to talk to the HSMs. It doesn't actually store any keys but provide a set of classes to communicate with the underlying HSM. The actual keys and certificates are stored on the HSMs. The reason for storing the keys and materials is to ensure security and efficiency. Since the keys are on the HSMs, they are safe to be stolen. All encryption/decryption operations are performed on the HSMs as well, this incre...
One of the Best Bits of Programming Advice I ever Got
Years ago (early 1992), I attached myself to this crazy skunkworks project that was using this weird language called Smalltalk. "Object Oriented" was in its infancy as a "hot" item. High paid consultants. Lots of people laying claim to what this new object religion was all about. This was 5 years before Alan Kay would make the statement "I invented the term 'Object Oriented Programming' and this {Java and C++} is not what I had in mind."Shortly after hooking up with this whacky group with t...
Programming advice,OOP,Smalltalk,Better design 2011-11-28 03:14:25
A guide on installing and setting up GitLab server on Ubuntu
GitHub, GitLab and BitBucket are the three most famous code hosting platform in the world. They have different features which allow teams or individuals to share code with others remotely. In case you want to build your own code hosting server so that you can host and share the code by yourself, you can install and set up your own server. In this post, we will walk you through a guide on installing and setting up GitLab server on Linux environment. gitlab is a web based code hosting tool which i...
4 Things Every Great Online Teacher Knows
Virtual classrooms have become the new norm for education during the pandemic. Teachers from every school have to adjust to this new reality to ensure students keep learning even in the absence of a physical classroom setup. Thankfully, there are various digital solutions to help teachers conduct online classes without much hassle. One such tool that has revolutionized the online learning market is a Learning Management System (LMS). For schools, the in-house learning management department...
Why using + to concatenate string in Java loop is not a good option
String concatenation is a common operation in Java programming. It is to concatenate multiple strings into a single string. Java provides a String class which is an immutable class which means the object cannot be mutated once instantiated. Once a String object is instantiated, its properties cannot be changed anymore, so when concatenating strings, it's actually create a new String instance to store the concatenated string values. For example, below is a simple string concatenation example. Str...
Java Concurrency Basics: CountDownLatch and CyclicBarrier
CountDownLatch CountDownLatch can be used in synchronizing behavior among threads, it makes one or more threads wait for some actions in other threads to be completed. It has a property count which defines how many countDown() need to be called before other threads which called await() to be waked up. When a thread calls CountDownLatch.await(), the thread will be blocked until the value of count becomes 0. The initial value of count can be specified when creating the CountDownLatch instanc...
JAVA,JAVA CONCURRENCY,COUNTDOWNLATCH,CYCLICBARRIER 2018-03-25 07:02:40
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