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This module contains review questions and answers keyed to the module titled Jb0160: Java OOP: Hello World.

Revised: Mon Mar 28 00:15:46 CDT 2016

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Table of contents

Preface

This module contains review questions and answers keyed to the module titled Jb0160: Java OOP: Hello World .

The questions and the answers are connected by hyperlinks to make it easy for you to navigate from the question to the answer and back again.

Questions

Question 1 .

True or false? Applications are designed to be downloaded and executed on-line under control of a web browser, while applets are designed to beexecuted in a stand-alone mode from the command line.

Answer 1

Question 2

True or false? All applications and applets written in Java require a main method.

Answer 2

Question 3

Explain the relationship between the name of the class file for a Java application and the location of the main method in the application.

Answer 3

Question 4

Explain how you cause a method to be a class method in Java.

Answer 4

Question 5

True or false? Class methods can be called without the requirement to instantiate an object of the class:

Answer 5

Question 6

Write the source code for a Java application that will display your name and address on the standard output device. Show the command-linestatement that would be required to execute a compiled version of your application.

Answer 6

Question 7

Show the three styles of comment indicators that are supported by Java.

Answer 7

Question 8

True or false? Java allows free-standing methods outside of a class definition?

Answer 8

Question 9

What is the relationship between the name of the controlling class in an application and the names of the files that comprise that application.

Answer 9

Question 10

What is the relationship between the number of classes in an application and the number of separate files with the class extension that go to make up that application? How does this change when all the classes are defined in the samesource file?

Answer 10

Question 11

True or false? Class methods in Java can only be called relative to a specific object.

Answer 11

Question 12

Write the signature line for the main method in a Java application.

Answer 12

Question 13

Write a Java application that will display your name on the screen.

Answer 13

Listings

What is the meaning of the following two images?

This image was inserted here simply to insert some space between the questions and the answers to keep them from being visible on the screen at thesame time.

The image is also an example of the kinds of things that we do in my course titled ITSE 2321, Object-Oriented Programming.

Missing image

This image was also inserted for the purpose of inserting space between the questions and the answers.

Missing image

Answers

Answer 13

Listing 1 . Listing for Answer 13.
/*File SampProg02.java from lesson 10 Copyright 1997, R.G.BaldwinWithout reviewing the following solution, write an application that will display your name on the screen.**********************************************************/ class SampProg02 { //define the controlling classpublic static void main(String[] args){ //define mainSystem.out.println("Dick Baldwin"); }//end main}//End SampProg02 class.

Questions & Answers

Ayele, K., 2003. Introductory Economics, 3rd ed., Addis Ababa.
Widad Reply
can you send the book attached ?
Ariel
?
Ariel
What is economics
Widad Reply
the study of how humans make choices under conditions of scarcity
AI-Robot
U(x,y) = (x×y)1/2 find mu of x for y
Desalegn Reply
U(x,y) = (x×y)1/2 find mu of x for y
Desalegn
what is ecnomics
Jan Reply
this is the study of how the society manages it's scarce resources
Belonwu
what is macroeconomic
John Reply
macroeconomic is the branch of economics which studies actions, scale, activities and behaviour of the aggregate economy as a whole.
husaini
etc
husaini
difference between firm and industry
husaini Reply
what's the difference between a firm and an industry
Abdul
firm is the unit which transform inputs to output where as industry contain combination of firms with similar production 😅😅
Abdulraufu
Suppose the demand function that a firm faces shifted from Qd  120 3P to Qd  90  3P and the supply function has shifted from QS  20  2P to QS 10  2P . a) Find the effect of this change on price and quantity. b) Which of the changes in demand and supply is higher?
Toofiq Reply
explain standard reason why economic is a science
innocent Reply
factors influencing supply
Petrus Reply
what is economic.
Milan Reply
scares means__________________ends resources. unlimited
Jan
economics is a science that studies human behaviour as a relationship b/w ends and scares means which have alternative uses
Jan
calculate the profit maximizing for demand and supply
Zarshad Reply
Why qualify 28 supplies
Milan
what are explicit costs
Nomsa Reply
out-of-pocket costs for a firm, for example, payments for wages and salaries, rent, or materials
AI-Robot
concepts of supply in microeconomics
David Reply
economic overview notes
Amahle Reply
identify a demand and a supply curve
Salome Reply
i don't know
Parul
there's a difference
Aryan
Demand curve shows that how supply and others conditions affect on demand of a particular thing and what percent demand increase whith increase of supply of goods
Israr
Hi Sir please how do u calculate Cross elastic demand and income elastic demand?
Abari
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Source:  OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
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