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Applets
Applets
Applets
Applets
Applets
Applets
Applets
Applets
Applets
Applets
Applets
Applets
Applets
Applets
Applets
Applets
Applets
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Applets

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  • An end user of a computer system or software is someone who uses it.
  • JVM :
  • Transcript

    • 1. Applets Group: Protocol Eagle eye
    • 2. Content..● Introduction to applet.● Differences ; Applet & Application.● Life cycle of an applet..● signed applets & Unsigned applets.● Applet Security (Restrictions)..● Advantages & Disadvantages Of Applet..● Overview : Java Applet Group: Protocol Eagle eye 2
    • 3. Pig PigletGroup: Protocol Eagle eye 3
    • 4. Application (App.) AppletGroup: Protocol Eagle eye 4
    • 5. What is an Applet..● An Applet is any small application that performs one specific task that runs within the scope of a larger program ,often as a plug-in.● An Applet typically refers to java applets. Group: Protocol Eagle eye 5
    • 6. Java Applet..● Java applet is a program, that can be embedded into HTML pages.● Java applets run on java enable web browsers,such as Mozilla and Internet explorer.● Applet is designed to run remotely on the client browser, so there are some restrictions on it.● Applets are used to make web site more dynamic and entertaining. Group: Protocol Eagle eye 6
    • 7. How to run remotely with client browser. Group: Protocol Eagle eye 7
    • 8. Relationships of Applet.. Group: Protocol Eagle eye 8
    • 9. Examples for Java Applets..● The smiley applet.● The pie chart applet.● The chess game applet.● The swatch applet.● Computing prime classes● The sound player applet. Group: Protocol Eagle eye 9
    • 10. Differences ; Applet & Application. Applets● (usually) small● must extend java.applet.Applet● have no main() method● run inside a limited environment, usually a web browser● are started and stopped by the browser● Group: Protocol Eagle eye 10
    • 11. Differences (cont..) Application● have more access to their host environment.● usually larger and more capable● are run by the end user (i.e. you!) Group: Protocol Eagle eye 11
    • 12. Life cycle of an applet..● An applet can react to major events in the following way.  It can initialize it self.  It can start running.  It can stop running.  It can preform a final cleanup (Destroy) in preparation for being unloaded. Group: Protocol Eagle eye 12
    • 13. Group: Protocol Eagle eye 13
    • 14. Signed applets vs. Unsigned applets.● Applets can be signed using a security certificate to indicate that they come from a trusted source which capabilities to access the client.● unsigned applets launched using Java Network Launch Protocol (JNLP) can safely access the client with the users permission. Group: Protocol Eagle eye 14
    • 15. Applet Security (Restrictions).● An applet is prevented to write anything on the computer that is executing on● It can read only documents located in web space.● It cant close down the web browser it is executing in.● It cant make network connection exceptions to the server host from which is originated Group: Protocol Eagle eye 15
    • 16. Advantages Of Applet..● are cross platform and can run on windows, Mac OS and Linux● can work all the version of java plug-in.● are supported by most web browsers.● are cashed in most web browsers, so will be quick to load when returning to a web page.● User can also have full access to the machine if user allows Group: Protocol Eagle eye 16
    • 17. Disadvantages of Applet..● Java plug-in is required to run applet.● Java applet requires JVM, so first time it takes significant start-up time.● If applet is not already cached in the machine, it will be downloaded from the internet and will take time.● Some browsers, such as mobile browsers running ios or android dont run applet at all. Group: Protocol Eagle eye 17
    • 18. Overview : Java AppletApplets are used to provide interactivefeatures to web applications that can beprovide by HTML alone.They can capture mouse input and also havecontrols like buttons or check boxes. Group: Protocol Eagle eye 18
    • 19. Overview (cont.)● An applet is a java class.● Its code is downloaded from a web server.● For security reasons,the execution of an applet is normally subject to restrictions. Group: Protocol Eagle eye 19
    • 20. THANK YOU...Group: Protocol Eagle eye 20

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