free visual basic barcode generator Java Demystified in Java

Drawing QR Code in Java Java Demystified

Java Demystified
Encoding QR Code JIS X 0510 In Java
Using Barcode generation for Java Control to generate, create QR Code ISO/IEC18004 image in Java applications.
Scanning QR Code JIS X 0510 In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
Figure 12-3
Encoding Barcode In Java
Using Barcode encoder for Java Control to generate, create bar code image in Java applications.
Decoding Barcode In Java
Using Barcode reader for Java Control to read, scan read, scan image in Java applications.
You create a window by defining your own window class that extends the JFrame class
Making QR In Visual C#.NET
Using Barcode generator for Visual Studio .NET Control to generate, create QR Code image in Visual Studio .NET applications.
Generate QR Code JIS X 0510 In Visual Studio .NET
Using Barcode creation for ASP.NET Control to generate, create QR-Code image in ASP.NET applications.
import javaxswing*; public class Demo { public static void main(String[] args) { Window win = new Window(); } } class Window extends JFrame { public Window () { super ("Window Title"); setSize(400,100); setDefaultCloseOperation(JFrameEXIT_ON_CLOSE); setVisible(true); } }
QR Drawer In .NET Framework
Using Barcode creator for Visual Studio .NET Control to generate, create QR image in .NET framework applications.
Encoding QR Code 2d Barcode In VB.NET
Using Barcode creation for VS .NET Control to generate, create QR Code image in .NET framework applications.
Content Container
GS1 - 13 Creator In Java
Using Barcode generator for Java Control to generate, create GS1 - 13 image in Java applications.
Make Bar Code In Java
Using Barcode creator for Java Control to generate, create bar code image in Java applications.
Before you can insert GUI elements into the window, you need to create a container for them Think of a container as a box into which you place the GUI elements The container is then placed inside the window A container is defined in the Container class found in the Abstract Windowing Toolkit You can access the Container class by importing the javaawt package You declare an instance of the Container class by calling the getContentPane() method of the JFrame class within the window class you defined for your program The getContentPane() method returns a reference to the content container, which is assigned to a Container object reference This is illustrated in the following statement:
Encode ANSI/AIM Code 128 In Java
Using Barcode drawer for Java Control to generate, create ANSI/AIM Code 128 image in Java applications.
Generate Matrix 2D Barcode In Java
Using Barcode encoder for Java Control to generate, create 2D Barcode image in Java applications.
Container ca = getContentPane();
Print Code 93 Full ASCII In Java
Using Barcode encoder for Java Control to generate, create USS 93 image in Java applications.
Printing Data Matrix ECC200 In Java
Using Barcode generation for Eclipse BIRT Control to generate, create DataMatrix image in Eclipse BIRT applications.
The Container class defines many methods, but the method that is most commonly used is the setBackground() method The setBackground() method colors the content container, giving your window a background color The setBackground() method requires one argument: the constant defined in the
Matrix Barcode Generator In .NET
Using Barcode generation for .NET Control to generate, create 2D Barcode image in .NET applications.
Recognize EAN / UCC - 13 In Visual Studio .NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
CHAPTER 12 Graphical User Interface
USS-128 Generation In .NET
Using Barcode generator for Reporting Service Control to generate, create GS1-128 image in Reporting Service applications.
Generate Barcode In Objective-C
Using Barcode printer for iPhone Control to generate, create bar code image in iPhone applications.
Color class that refers to the color you want for the background Table 12-2 lists the most commonly used color constants
Recognize Bar Code In Visual Studio .NET
Using Barcode decoder for .NET Control to read, scan read, scan image in .NET framework applications.
Draw Code 128 Code Set B In Java
Using Barcode drawer for Android Control to generate, create Code 128 Code Set A image in Android applications.
Constant Colorwhite ColorlightGray Colorgray Colorblack Colorblue Colorgreen Colorcyan Colormagenta Colororange Colorpink Coloryellow Color White Light Gray Gray Black Blue Green Cyan Magenta Orange Pink Yellow
Table 12-2
Color Constants Used to Paint the Content Container of a Window
The follow example shows how to declare an instance of a container and display the container within the window You ll notice that this example builds upon the previous example This example colors the background of the container light gray:
Import javaawt*; import javaxswing*; public class Demo { public static void main(String[] rgs) { Window win = new Window(); } } class Window extends JFrame { public Window () { super ("Window Title"); setSize(400,100); setDefaultCloseOperation(JFrameEXIT_ON_CLOSE); setVisible(true); Container ca = getContentPane(); casetBackground(Colorlightgray); } }
Java Demystified
Java Layout Managers
In some programming languages you specify the pixel coordinates where the GUI element should appear within the window Programmers call this specifying the exact position of the GUI element Positing GUI elements within the container is a little tricky because you specify relative positions rather than exact positions That is, you specify generally where you want the GUI element to be positioned on the screen, and the Java virtual engine determines the exact location At first, this technique of locating GUI elements within the container appears archaic However, there is a very logical reason Java uses this technique Remember that a Java program is machine independent This means that the program that runs on your computer must also be able to run on any kind of computer that has a Java Virtual Machine running And those other computers are likely to have a different screen than the screen you used to design your program To compensate for these differences, Java requires the Java Virtual Machine to determine the exact screen location for GUI elements You simply provide a general location on the screen for where you want the GUI element Your first step is to decide on a layout manager for the container Think of a layout manager as a way that Java organizes the container There are four commonly used layout managers: the Flow Layout Manager, the Border Layout Manager, the Grid Layout Manager, and the Gridbag Layout Manager
Flow Layout Manager
The Flow Layout Manager is used to place GUI elements in the container the way words are placed on a page that is, from left to right then at the beginning of the next line GUI elements are automatically repositioned in the center of the container whenever the window is resized You use the Flow Layout Manager by declaring an instance of the FlowLayout class, as shown here:
FlowLayout flm = new FlowLayout();
As you ll soon discover when you begin placing GUI elements in a container, you have little control over the placement of the elements For example, the FlowLayout class enables you to specify if you want GUI elements to be centered, flush left, or flush right by passing the constructor an appropriate constant The default behavior is to center elements, so you don t need to pass the constructor a constant to center the elements You can specify left or right by passing the constructor the FlowLayoutLEFT or FlowLayoutRIGHT constant You can
Copyright © OnBarcode.com . All rights reserved.