Exam 1: Creating Your First Java Classes

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.

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.

What are the differences between K & R style and Allman style? Which one is used in this textbook?

____ is the process the compiler uses to divide your source code into meaningful portions; the message means that the compiler was in the process of analyzing the code when the end of the file was encountered prematurely.

System software is used for tasks such as word processing, calculations and playing games.

When you run a Java application using the ____ command, do not add the .class extension to the filename.

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

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

It is a tradition among programmers that the first program you write in any language produces "____" as its output.

A Java identifier can contain only letters, digits, ampersands, or number signs.

Write a line comment and block comment for the following line of code identifying the author, date, and purpose of the method. In addition, explain the difference between comments that consist of a double-slash (//) and those that have a starting and ending slash asterisk (/* .. */). System.out.println("Hello Students");

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

What is the purpose of the argument "null" in the statement below: JOptionPane.showMessageDialog(null, "Show my message");

If a compiler detects a violation of language rules, it refuses to translate the class to ____.

The ____ is also called the Java class library; it contains information about how to use every prewritten Java class, including lists of all the methods you can use with the classes.

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

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