10 One Ring to rule them all, One Ring to find them, One Ring to bring them all and in the darkness bind them. —John Ronald Reuel Tolkien Object-Oriented Programming: Polymorphism OBJECTIVES In this chapter you will learn: ■ ■ ■ ■ ■ General propositions do not decide concrete cases. —Oliver Wendell Holmes A philosopher of imposing stature doesn’t think in a vacuum. Even his most abstract ideas are, to some extent, conditioned by what is or is not known in the time when he lives. —Alfred
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Team[oR] 2001 [x] java Java 2: The Complete Reference by Patrick Naughton and Herbert Schildt Osborne/McGraw-Hill © 1999, 1108 pages ISBN: 0072119764 This thorough reference reads like a helpful friend. Includes servlets, Swing, and more. Table of Contents Back Cover Synopsis by Rebecca Rohan Java 2: The Complete Reference blends the expertise found in Java 1: The Complete Reference with Java 2 topics such as "servlets" and "Swing." As before, there's help with Java Beans and migrating
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class MyClass{} Question 4) A byte can be of what size 1) -128 to 127 2) (-2 power 8 )-1 to 2 power 8 3) -255 to 256 4)depends on the particular implementation of the Java Virtual machine Question 5) What will be printed out if this code is run with the following command line? java myprog good morning public class myprog{ public static void main(String argv[]) { System.out.println(argv[2]);
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fast but too low-level to be suitable for large software development. 1990’s Java was created by James Gosling at Sun Microsystems. Java was originally designed for interactive television, but it was too advanced for the digital cable television industry at the time. James Gosling aimed to implement a virtual machine and a language that had a familiar C/C++ style of notation. JavaScript is not related to Java. It was originally developed in Netscape, by Brendan Eich. Battling with Microsoft
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common concerns. AspectJ is an implementation of aspect-oriented programming for Java A join point is a well-defined point in the program flow. A pointcut picks out certain join points and values at those points. A piece of advice is code that is executed when a join point is reached. These are the dynamic parts of AspectJ. AspectJ's aspect are the unit of modularity for crosscutting concerns. They behave somewhat like Java classes, but may also include pointcuts, advice and inter-type declarations
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Question 1 Change the following infix expression postfix expression. (A + B)*C+D/E-F Question 2 Suppose a 3d array LA is declared using LA(3:8, -4:1, 6: 9), base(LA)=200, w=4. find loc of LA[2,-2,5]. (Row major order). Question 3 Convert the expression (True && False) || !(False || True) to postfix expression. Show the contents of the stack at every step. Question 4 Use a stack to evaluate the following postfix expression and show the content of the
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Middleware for Distributed Systems Evolving the Common Structure for Network-centric Applications Richard E. Schantz BBN Technologies 10 Moulton Street Cambridge, MA 02138, USA schantz@bbn.com Douglas C. Schmidt Electrical & Computer Engineering Dept. University of California, Irvine Irvine, CA 92697-2625, USA schmidt@uci.edu 1 Overview of Trends, Challenges, and Opportunities Two fundamental trends influence the way we conceive and construct new computing and information systems. The
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1 C C C C Unix/Linux fork/wait/waitpid signal/kill/raise/alarm/pause/sigprocmask gcc gdb makefile IPC Socket Windows SDK Windows WinMain/WinProcedure Windows SDK MSDN SDK GUI 2 Java Java Java JDK Java IDE Eclipse Tomcat JSP Servlet 3 Web HTML5 Web HTTP Server Web Web HTML5 canvas Web Web 4 SVN JUnit Git Java rewrite Nginx Cache Web SQL JS
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which resulted in Oak being renamed to Java. The Java group aspired to develop a language that would share similar characteristics with C languages but fewer bugs, more versatility, hardware independence, and reduced development times. Java’s “write once, run anywhere” (WORA) feature means once an application is integrated with Java, it will run on any platform and device. The WORA capability is the most popular and well known feature Java has to offer. Java was created with unique security features
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inventory and sales management system for them. It minimized the manual task and maximized the employees’ time on doing their work because it lessens the time on generating sales and inventory summaries and reports. The researchers used NetBeans 7.1.1 Java SE as programming language and MySQL 5.1 command line client as database server. They started the development of the system on November 2011 and finished on January 2013. Conclusion The new system minimizes the time needed in managing and monitoring
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