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According to XMPP Standards Foundation "XMPP is the Extensible Messaging and Presence Protocol, a set of open technologies for instant messaging, presence, multi-party chat, voice
what are Objects and Fields in java
Describe Graphics Objects ? In Java all drawing takes place via a Graphics object. This is an example of the class java.awt.Graphics. Initially the Graphics object you use w
Why hub is used in networks? HUB: Hub is networking component that can be used to connect the networks and it could also be used to extend the size of networks. In a simple way
Write a ComputerPart class and a ComputerKit class and a client class to test them. The ComputerPart class has two variables: a String representing an item, and a double representi
Difference between Hash Map and Hash Table? The HashMap class is roughly equivalent to Hashtable, except that it is unsynchronized and allows nulls. (HashMap allows null values
Explain the term Naming Packages in details? As you saw previously name space conflicts arise if two pieces of code declare the similar name. Java remains track of what belongs
How many bits are used to show Unicode, ASCII, UTF-16, and UTF-8 characters? Unicode requires 16 bits and ASCII require 7 bits although the ASCII character set uses only 7 bits
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Describe toString() Methods ? Print methods are general in some languages, but most Java programs operate differently. You can use System.out.println() to print any object. The
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