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What Is a Socket in Java Networking and RMI?
Ans) A socket is one end-point of a two-way communication link among two programs running on the network. A socket is bound to a port number so that the TCP layer can recognize the application that data is destined to be sent. Socket classes are used to show the connection among a client program and a server program. The java.net package gives two classes-Socket and Server Socket-which implement the client side of the link and the server side of the connection, respectively.
What is the difference between instance and object of a class? Few says both are same, then why java kept both the words for same thing?
Java is increasingly used for middleware applications to communicate among Server and clients. Java has features like multithreading, portability and networking capabilities. Chang
Describe what is bytecode? It is an instruction set. It extends with class. 'javac' compiler translates the .java file into .class. JVM interprets bytecode.
Using RMI, program a PONG game that enables two users to play against one another. Pong class: package graphics;/* * Copyright (c) 2006, Your Corporation. All Rights Reserved. */
Each time an object is operated in Java, it goes into the area of memory named as heap. The Java heap is named the garbage collectable heap. The garbage collection may not be force
what are the advantages of packages and interface? why we use them? and what is the way of using packages and interfaces complete description with examples?
What is Scope of Variable ? Space in that a variable is effective is called as the scope of a variable. In other words we can say area where that variable is available for the
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.
Question: (a) (i) Describe the purpose of comments when writing programs in Java. (ii) Name the types of comments available and illustrate with simple examples. (b) (i)
Write a java program that computes the scores of 10 students in the following units; 1.Java 2.PHP 3.Python 4.C++ 5.Perl Generate a transcript.
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