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Modify your UserProfile class to meet the following requirements:
Note that wall postings should be stored in reverse-chronological order, meaning that newly created posts should be stored at the beginning of the list, not at the end. Also, this method should ensure that the total number of posts does not exceed 20. Once the wall gets that full, delete the oldest post to make room for a new one. Study the API documentation for ArrayList to find suitable methods to accomplish this arrangement. You may assume that the clock is consistent, that is, postings created more recently will also have a more recent time stamp.
What is an Applets? Applets: These are small java programs. They can send from one to another computer over internet by using Applet Viewer which supports java. Applets
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
The confidentiality and privacy may be accomplished through encryption. Encryption may be: Private-key or symmetric: This is based on a single key. This needs the sender and the
What is an object's lock and which objects have locks? An object's lock is a mechanism that is used by multiple threads to get synchronized access to the object. A thread may i
Why are JSP pages the preferred API for creating a web-based client program? Because no plug-ins or security policy files are required on the client systems (applet does). Also,
What is a Relational Database? Give the names of any three RDBMS software? Database consist of two or more then two tables are called Relational database. Oracle dabatbase S
A stored procedure is a set of statements/commands which reside in the database. The stored procedure is pre-compiled and keeps the database the effort of parsing and compiling sql
JMS consumer is a JMS client that receives messages.
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What is the use of UnicastRemoteObject in RMI? Ans) The UnicastRemoteObject class gives support for point-to-point active object references using TCP streams. Objects that need
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