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Exam 1: Creating Your First Java Classes

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Question 21

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Explain the purpose of arguments and why it is necessary to pass arguments to a method.

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Arguments are pieces of information that...

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Question 22

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   public class First    {      public static void main(String[] args)      {         System.out.println("First Java application") ;      }    } Given the above code, which item identifies that the method will work without instantiating an object of the class?

A) public
B) static
C) void
D) println

E) A) and B)
F) A) and C)

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Question 23

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When you define a Java class using an identifier, what are the requirements you need to know?

A(n) ____ defines the circumstances under which a class can be accessed and the other classes that have the right to use a class.

A(n) ____ is a GUI object resembling a window in which you can place messages you want to display.

A class named  first  is different from a class named  FIRST because ____.

Why is creating a GUI environment for users a natural use for object orientation?

Match each term with the correct statement below.

It is best to use the ____ available text editor when writing Java programs.

If you receive an error that states, "Exception in thread 'main' java.lang.NoClassDefFoundError," when you try to execute the application, you probably do not have your ____ set correctly.

Match each term with the correct statement below.

Using the void keyword in the main() method header indicates that a value will be returned by the main() method is called.

A compiler ignores whitespace (that is, any combination of nonprinting characters) between words and lines.

Match each term with the correct statement below.

Although not a requirement, it is Java standard that class identifiers begin with an uppercase letter and use other uppercase letters to improve readability.

Once an application is written and saved, the Java class must be compiled. Describe what two procedures must occur in order to view the output of the application.

A program written in ____ is the most basic circuitry-level language.

public class First {    public static void main(String[] args)    {       System.out.println("First Java application") ;    } } Given the above code, which item identifies the name of the class?

Match each term with the correct statement below.

____ are pieces of information that are sent into, or passed to, a method, usually because the method requires the information to perform its task or carry out its purpose.