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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.
True or false? Methods are often called functions, procedures, subroutines, and various other names.
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.
True or false? In Java, you must write all of the methods that you need.
True or false? In the following statement, sqRtPeas is the name of a method.
System.out.println(sqRtPeas);
True or false? Java only allows you to use the pre-written methods in the class libraries.
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?
True or false? According to common programming jargon, the process of causinga method to be executed is commonly referred to as setting the method.
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.
True or false? When called, a method will usually
True or false? A value of type double can be (almost) any numeric value, positive or negative, with or without a decimal part.
True or false? Java is not a case-sensitive programming language.
True or false? The following two rules will generally suffice to keep you out of trouble when defining variable and method names in Java:
True or false? In Java, the assignment operator is the % character.
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.
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.
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