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Exam 1: Creating Java Programs

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Question 21

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Java contains a class named ____ that allows you to produce dialog boxes.

A) JBox
B) JOptionPane
C) JDialog
D) JGUI

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

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Question 22

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Write a line comment and block comment for the following line of code identifying the author, date, and purpose of the method. System.out.println("Hello Students");

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Possible comments include:
// ...

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Question 23

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____ 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.

After a successful compile, you can run the class file on any computer that has a ____.

____ describes the feature of languages that allows the same word to be interpreted correctly in different situations based on the context.

____________________ comments are a special case of block comments that are used to generate documentation.

Match each term with the correct statement below. -Hypothetical computer used to run a Java program

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

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. -Series of characters that will appear in output exactly as entered

You must use the Java interpreter to translate the bytecode into executable statements before running a Java application.

Match each term with the correct statement below. -The rules for the programming language

JOption.Pane.showMessageDialog(null, "Show my message"); The showMessageDialog() method above requires two arguments. What are the two arguments and what is the purpose of each argument?

What are some of the reasons the javac command might not be recognized?

In a ____ environment, you can change directories using the cd command. For example, to change to a directory named MyClasses, you type cd MyClasses and press Enter.

In programming, named computer memory locations are called ____________________ because they hold values that might vary.

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?

Identify why a class named first would be different from a class named FIRST. Explain why it is important to be aware of uppercase and lowercase values when writing Java programs?

What are the two main types of Java programs?

Dots (or periods) in a Java statement are used to separate the names of the components that make up the statement.