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Exam 1: Creating Java Programs

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Question 21

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What happens after a programmer successfully compiles a Java program named "First.java"?

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If you receive no error messages after c...

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Question 22

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Briefly describe the elements of the main() method: public static void main(String[] args) { Java code... }

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In the method header public static void ...

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Question 23

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Locating and repairing all syntax errors is part of the process of ____ a program.

Describe the components (objects and classes) that are used in the statement System.out.println() .

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.

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

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

If an object's methods are well written, the user is unaware of the low-level details of how the methods are executed, and the user must simply understand the interface or interaction between the method and the object.

____ 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.

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

A ____ is an error not detected until the program asks the computer to do something wrong, or even illegal, while executing.

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?

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

When you issue the command to compile a class containing errors, the Java compiler does not produce any error messages. You will first need to run the class in order to see error messages.

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

Whenever a method requires multiple arguments, the arguments are always separated with ____.

   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?

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

Why is it important for programmers to use program comments?

____ refers to the hiding of data and methods within an object.