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How instant messaging works? Write the steps involved in this process?
The Instant Messaging services available permit us to manage a list of people (contacts) that we interact along with regularly. We can send instant messages to any of the contacts within our list as long as that contact is online. Subsequent steps are included in IM working:
1. User commences the IM client.2. IM client finds the IM server & logs in.3. It launches communication info (IP address, etc) to the IM server.4. IM server searches user's contacts & sends him/her the communication info.5. IM server also notifies the contacts which the user is online; sends his/her communication info to them.6. The user's & the contact's IM clients are prepared to communicate directly (P2P).7. As new contact has come online, IM server informs them about the user being online and many more.8. Multiple, real-time chat are possible.9. While the user logs-off, his/her IM client informs the IM server.10. IM servers wipes away the temporary file and inform the user's contact's about his/her ‘offline' status.
If there exist multiple conditions, the switch statement is suggested. It is because only one expression gets evaluated depending on which control jumps directly to the respective
What is static in java? Static means one per class, not one for each object no matter how many example of a class might exist. This means that you can use them without making a
What is output of the following JavaScript code? Str="Virtual University of Pakistan"; document.write(str.substring(5,str.length)) ;
RMI uses a layered architecture; every of the layers could be increased or replaced without affecting the rest of the system. The details of layers can be summarised as follows:
Problem 1) Describe the concept of interfaces in Java with a suitable example for the same Explanation of the concept of interfaces with example 2) Describe the Inp
Describe about basic java programming language? 1. Study the Java programming language: its syntax, patterns, idioms, and styles. 2. Become comfortable along with object orien
try { pa="weblog"; pas="weblog"; Connection c; Statement st;
Binding is a method of associating or registering a name for a remote object that can be used at a later time to look up that remote object. A remote object can be linked with a na
Sequence diagrams are communication diagrams which detail what messages are sent and when. The sequence diagrams are placed according to time. The time performs as you move from to
RMI is a set of APIs that permits to build distributed applications. RMI uses interfaces to describe remote objects to turn local method invocations into remote method invocations.
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