java barcode api Java Applets in Java

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CHAPTER 14 Java Applets
Quick Response Code Generation In Java
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Recognizing QR Code 2d Barcode In Java
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Figure 14-1
Barcode Creation In Java
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Decoding Barcode In Java
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Prompts the user to enter the total number of questions that appear on the test
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Encoding QR Code 2d Barcode In .NET
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Figure 14-2
Create QR In .NET Framework
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Make QR Code ISO/IEC18004 In VB.NET
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Prompts the user to enter the total number of correctly answered questions
Encoding Data Matrix In Java
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Create Bar Code In Java
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Figure 14-3
Generating Code 128 Code Set C In Java
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Code 39 Encoder In Java
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Displays the grade for the test
I-2/5 Creator In Java
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Bar Code Printer In VS .NET
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The Status Window
EAN13 Generation In C#.NET
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Recognize EAN13 In Java
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It is always good programming practice to give the user of your applet a status while your applet is running In this way, if your applet is busy processing, the user will see a frequently changing message telling the user that the applet is working fine or that the applet experienced an error The status line, located at the bottom of the applet window, is used to display the current status of your applet You write to the status line by calling the showStatus() method The showStatus() method requires one argument the message you want displayed on the status line The following example illustrates how to display the status of your applet on the status line of the applet window You can use the HTML document shown in the
Code39 Generation In None
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Making Barcode In Objective-C
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Java Demystified
Code 3/9 Creator In .NET
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Data Matrix 2d Barcode Creator In None
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previous example to run this applet Figure 14-4 shows what happens when you run this applet
import javaxswingJApplet; import javaawtGraphics; public class Demo extends JApplet { public void paint(Graphics g) { gdrawString( "Hello world!", 30, 30 ); showStatus("The Hello world applet is running"); } }
Figure 14-4
Displays a message on the status line of the applet window
Quiz
1 What is an applet 2 What restrictions are imposed on an applet 3 How do you execute an applet 4 Why doesn t an applet have a main() method 5 Why don t you have to overwrite all the methods of the JApplet class 6 Why can t an applet be run from the command line 7 What is the purpose of the init() method 8 Why would you use an applet 9 What is the purpose of a status line 10 How is a parameter passed to an applet
CHAPTER A
Final Exam
1 What is the difference between an applet and a Java application 2 Can statements in an applet write a file to the local computer 3 Can an applet be executed from the command line 4 What is the entry point into an applet 5 What are the three methods that should be overwritten in every applet 6 What method is called once the applet is loaded 7 What is the purpose of the start() method 8 Can an applet use GUI elements 9 How do you run an applet 10 Can a parameter be passed to an applet from the command line 11 What method do you call to display a GUI window 12 For which GUI elements do you use the ItemListener 13 Is the following the correct order in which you assemble a GUI window Window, container, content pane, GUI elements 14 What is the relationship between the content pane and GUI elements 15 True or false All GUI elements should always be enabled
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16 How do you obtain a content pane
Java Demystified
17 How do you set the background color of the container 18 Can you use pixel coordinates to position GUI elements in a window 19 Why would you use the Gridbag Layout Manager over the Grid Layout Manager 20 What is a major difference between creating a GUI in Java as opposed to creating a GUI in another programming language such as C++ 21 What is the purpose of an access specifier 22 What is an interface 23 True or false Each instance of a class has its own instance variable 24 How can one class inherit another class 25 What is an abstract class 26 What is overloading 27 What is a method signature 28 What does encapsulation refer to in Java 29 What is the entry point to a Java application 30 What is the Java Virtual Machine 31 How can a Java application run on practically any computer 32 What is a resultset 33 What is an embedded query 34 What is a DBMS 35 What is the difference between a while loop and a dowhile loop 36 What is the difference between an int and a float 37 What is System in Systemoutprintln() 38 What does the new operator do 39 Assuming that x equals 10, evaluate this expression: !x==10 40 Why would you create an endless loop 41 What is the difference between an array and the Arrays class 42 What kind of code is generated by the Java compiler 43 How do you temporarily change from one data type to another 44 What does a variable identifier represent
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