Returning objects from functions

Lecture Object-Oriented programming - Lesson 43: Techniques for error handling. The main topics covered in this chapter include: techniques for error handling, abnormal termination, graceful termination, return the illegal value, return error code from a function, exception handling,...

33p linyanjun_2408 23-04-2022 21 1   Download

In this chapter you will learn about the following: Characteristics of users that every software engineer should understand; various ways of working with users to ensure that a software system has both the required functionality and the required usability; some basic principles for the design of simple graphical user interfaces (GUIs), involving windows, menus, icons and pop-up dialogs; how to evaluate user interfaces; how to implement basic GUIs in Java.

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After studying this chapter you will be able to: Describe how objects are returned from methods, describe how the reserved word this is used, define overloaded methods and constructors, define class methods and variables, describe how the arguments are passed to the parameters using the pass-by-value scheme, document classes with javadoc comments, organize classes into a package.

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This chapter presents the following content: GUI overview, event-driven programming basics, GUI classes and packages, a simple window program, JFrame Class, Java components, JLabel component, JTextField Component, Component Listeners, interfaces, inner classes, anonymous inner classes, jbutton component, JOptionPane Dialog Box, distinguishing between multiple events, using GetActionCommand to distinguish between multiple events (optional), color.

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Creating Objects JavaScript Constructors Construct and Return Object Instances The JavaScript Native/Built-In Object Constructors User-Defined/Non-Native Object Constructor Functions Instantiating Constructors Using the new Operator Creating Shorthand/Literal Values from Constructors Primitive (a.k.a. Simple) Values The Primitive Values null, undefined, “string”, 10, true, and false Are Not Objects How Primitive Values Are Stored/Copied in JavaScript Primitive Values Are Equal by Value The String, Number, and Boolean Primitive Values Act Like Objects When Used Like Objects Complex (a.k.a.

166p goshop_123 23-04-2013 65 6   Download

Module 9 A Closer Look at Classes Table of Contents CRITICAL SKILL 9.1: Overload contructors .................................................................................................... 2 CRITICAL SKILL 9.2: Assign objects ................................................................................................................ 3 CRITICAL SKILL 9.3: Pass objects to functions ............................................................................................... 4 CRITICAL SKILL 9.4: Return objects from functions..........................................................

55p tengteng14 20-12-2011 56 4   Download

In this function, which is executed when the user clicks the Loader object, the Loader object is removed from the Stage, and then the playhead of each movie clip on the Stage moves to the first frame and begins playing. 3 Choose Control Test Movie in Flash Professional to preview the movie. Click on any of the four sections, and then click on the loaded content to return to the main movie. When you return to the main movie, all four movie clips play their nested animations. Creating Masks Masking is a way of selectively hiding and displaying content on...

10p yukogaru13 30-11-2010 75 10   Download