True or false? Applications are designed to be downloaded and executed on-line under control of a web browser, while applets are designed to be executed in a stand-alone mode from the command line.

Answer 1

True or false? All applications and applets written in Java require a main method.

Answer 2

Explain the relationship between the name of the class file for a Java application and the location of the main method in the application.

Answer 3

Explain how you cause a method to be a class method in Java.

Answer 4

True or false? Class methods can be called without the requirement to instantiate an object of the class:

Answer 5

Write the source code for a Java application that will display your name and address on the standard output device. Show the command-line statement that would be required to execute a compiled version of your application.

Answer 6

Show the three styles of comment indicators that are supported by Java.

Answer 7

True or false? Java allows free-standing methods outside of a class definition?

Answer 8

What is the relationship between the name of the controlling class in an application and the names of the files that comprise that application.

Answer 9

What is the relationship between the number of classes in an application and the number of separate files with the class extension that go to make up that application? How does this change when all the classes are defined in the same source file?

Answer 10

True or false? Class methods in Java can only be called relative to a specific object.

Answer 11

Write the signature line for the main method in a Java application.

Answer 12

Write a Java application that will display your name on the screen.

Answer 13

/*File SampProg02.java from lesson 10
Copyright 1997, R.G.Baldwin
Without reviewing the following solution, write an 
application that will display your name on the screen.
**********************************************************/
class SampProg02 { //define the controlling class
  public static void main(String[] args){ //define main
    System.out.println("Dick Baldwin");
  }//end main
}//End SampProg02 class.

Back to Question 13

public static void main(String[] args)

Back to Question 12

False. Class methods can be called by joining the name of the class with the name of the method using a period.

Back to Question 11

Each class definition results in a separate class file regardless of whether or not the classes are defined in separate source files.

Back to Question 10

One of the files must have the same name as the controlling class with an extension of class .

Back to Question 9

False.

Back to Question 8

/** special documentation comment used by the JDK javadoc tool */
/* C/C++ style multi-line comment */
// C/C++// C/C++ style single-line comment

Back to Question 7

/*File Name01.java
This is a Java application that will display a
name on the standard output device.

The command required at the command line to execute this
program is:

java Name01

**********************************************************/

class Name01 { //define the controlling class
  public static void main(String[] args){ //define main
    System.out.println(
     "Dick Baldwin\nAustin Community College\nAustin, TX");
  }//end main
}//End Name01 class.

Note that the \n characters in Listing 3 cause the output display to advance to the next line.

Back to Question 6

True.

Back to Question 5

Preface or precede the name of the method with the static keyword.

Back to Question 4

The name of the class file must be the same as the name of the class that contains the main method (sometimes called the controlling class) .

Back to Question 3

False. Applets do not require a main method while applications do require a main method.

Back to Question 2

False. Applications are for stand-alone use while applets are for browsers.

Back to Question 1