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This module contains review questions and answers keyed to the module titled Jb0130: Java OOP: A Gentle Introduction to Methods in Java

Revised: Sun Mar 27 20:24:28 CDT 2016

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This module contains review questions and answers keyed to the module titled Jb0130: Java OOP: A Gentle Introduction to Methods in Java .

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.


Question 1 .

True or false? Methods are often called functions, procedures, subroutines, and various other names.

Answer 1

Question 2

True or false? A Java method can be thought of as a separate program module that has the ability to do something useful. Having written the method, you canmake it available for use as a helper to your main program each time your main program needs to have that useful thing done.

Answer 2

Question 3

True or false? In Java, you must write all of the methods that you need.

Answer 3

Question 4

True or false? In the following statement, sqRtPeas is the name of a method.


Answer 4

Question 5

True or false? Java only allows you to use the pre-written methods in the class libraries.

Answer 5

Question 6

Normally, when designing and writing a method such as one that can calculate the square root of a number, it is desirable to write it in such a way that itcan calculate the square root of any number (as opposed to only one specific number) . How is that accomplished?

Answer 6

Question 7

True or false? According to common programming jargon, the process of causinga method to be executed is commonly referred to as setting the method.

Answer 7

Question 8

True or false? This process of providing information to a method when you call it is commonly referred to as sending a message to the method.

Answer 8

Question 9

True or false? When called, a method will usually

  • perform an action
  • send back an answer. or
  • some combination of the two

Answer 9

Question 10

True or false? A value of type double can be (almost) any numeric value, positive or negative, with or without a decimal part.

Answer 10

Question 11

True or false? Java is not a case-sensitive programming language.

Answer 11

Question 12

True or false? The following two rules will generally suffice to keep you out of trouble when defining variable and method names in Java:

  • Use only letters and numbers in Java names.
  • Always make the first character a letter.

Answer 12

Question 13

True or false? In Java, the assignment operator is the % character.

Answer 13

Question 14

True or false? The behavior of the sqrt method is to calculate and display the square root of the value passed to it as a parameter.

Answer 14

Question 15

True or false? The syntax for passing parameters to a method consists of following the name of the method with a pair of matching parentheses thatcontain the parameter or parameters. If more than one parameter is being passed, they are all included within the parentheses and separated by commas. The orderof the parameters is not important.

Questions & Answers

what is a market demand schedule
Blessed Reply
What is demand curve
mohamed Reply
Types of demand curve
demand curve is a showing the aggregate of demand whether falling from right to the left in the table above
demand curve is the graphical representation of various quantities of a commodity bought at various prices
What is the formula for calculating elasticity
Hafsat Reply
what is demand
Anefor Reply
demand is the quantity of commodity that consumers wil be able and wiling to buy at a given price at a given time
what is international trade?
Friday Reply
it is the exchange of goods and services across international borders.
what is taxation
Eunice Reply
the definition of economic by Adam Smith
Geon Reply
Adam Smith define economic as the science of wealth
What is enconomics
what is meant by pisp in economics?
Amara Reply
payment initiation service provider
what is demand
Joy Reply
Demand refers to the consumers' desire to purchase goods at given prices. Demand can mean either demand for a specific good or aggregate demand for the total of all goods in an economy.
What is economc
Joseph Reply
What is economc
What is Economic
Vicky Reply
What's the price index of consumption?
Pun Reply
what population
Hackman Reply
I think it's the sum total of people in a goegraphical area at a given time
it refers to the number of people living in a particular area over a given period of time
decribe law of demand
Lovely Reply
the higher the price , the higher the quantity demanded
what is economic growth
Metuge Reply
what is an economic system
Economic system is the mechanism which deals with the production, distribution and consumption of good and services in a particular society
of course
what is a weight
What is a weight
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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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