Java: Java Programming For Beginners a simple Start To Java Programming (Written By a software Engineer)
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Java Programming For Beginners - A Simple Start to Java Programming ( PDFDrive )
- Bu sahifa navigatsiya:
- The Applet Class
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A “Welcome, World” Applet
The accompanying is a basic applet named BasicApplet.java: import java.applet.*; import java.awt.*; public class BasicApplet extends Applet { public void paint (Graphics gx) { gx.drawstring (“Say Hello To The World!”, 35, 70); } These import explanations bring the classes into the extent of our applet class: java.awt.graphics java.applet.applet Without those import explanations, the Java compiler would not perceive the classes Applet and Graphics, which the applet class alludes to. The Applet Class Each applet is an augmentation of the java.applet.applet class. The base Applet class gives techniques that a determined Applet class may call to get data and administrations from the program connection. These incorporate techniques that do the accompanying: Get parameters of the applet Get the system area of the HTML record that contains the applet Get the system area of the applet class registry Print a status message in the program Fetch a picture Fetch a sound Play a sound Perform resizing of the applet Moreover, the Applet class gives an interface by which the viewer or program gets data about the applet and controls the applet’s execution. The viewer might: Request data about the form, creator and copyright of the applet Request a depiction of the parameters the applet perceives Perform applet initialization Perform applet destruction Begin the execution of the applet Stop the execution of the applet The Applet class allows default usage of each of these routines. Those executions may be overridden as essential. The “Say Hello To The World!” applet is complete in itself. However, as part of the implementation, only the paint() function is over-ridden. |
