طراحی و پیاده سازی نرم افزار

java Servlet و CGI

فریبا یکشنبه 29 مرداد‌ماه سال 1391 ساعت 09:28 ب.ظ

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Client is the system that contain Browser Application and can communicate with server is known as client.
Container is a peace of application that is installed inside the Application Server and the program has to deploy inside the container. container can identify server program, debug it and execute it. Example:Tomcat 5.5.9 is a container. JBoss and Glassfish also are container.
Server: The system where the container is installed and responsible to get the request from client is known as Server

فریبا یکشنبه 29 مرداد‌ماه سال 1391 ساعت 09:21 ب.ظ

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فریبا یکشنبه 29 مرداد‌ماه سال 1391 ساعت 08:00 ب.ظ

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Java program can be set as an applet program if it extends applet class.
the applet class present inside java.applet package.
the applet program executes in a cyclic process, where it executes four different methods. 1-init 2-start 3-stop 4-destroy
the process of executing this 4 methods is known a the life cycle process of applet and it starts from the applet loaded into the memory till destroy of the object is known as life cycle process of the object.
init() method: the init() method is called by browser to inform the applet that it is loaded into the system.
start(). with start methods executing the original service/execution of applet will start.
stop(): the job of stop method is to stop the execution of an applet program.
destroy(): destroy method delete all the resources that is reserved by applet.
in HTML code we should use ".class" file of java. Example: <html>
<applet code ="Demo.class" height = 600 width = 800>
</applet>
</html>

فریبا یکشنبه 29 مرداد‌ماه سال 1391 ساعت 05:32 ب.ظ

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in java, JVM addes one default thread in the program and that is main thread.
we use any thread concept or not, by default the main thread will be added to the program.

فریبا یکشنبه 29 مرداد‌ماه سال 1391 ساعت 02:20 ب.ظ

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