Multiple Choice Questions
1 1. Which method is used to stop an applet ?
a. init() b. start()
c. destroy() d. stop()
2 2. Which method is used to draw anything on he display area of an applet ?
a. init() b. paint()
c. start() d. drawString()
3 3. Which method is called when an applet is loaded in the computer's memory for the first time ? a. init() b. start()
c. stop() d. destroy()
4 4. Which tag is used to specify an applet class ?
a. <BODY> b. <TITLE>
c. <APPLET> d. <HEAD>
5 5. Which extension is used to save an html file ?
a. .java b. .html
c. .class d. .txt
True or False :-
11. Applet run on a Java enabled Web browser. TRUE
22. Applets do not make a Web page interactive. FALSE
33. The Graphics class belongs to the standard Applet class. FALSE
44. paint() is a standard method of the Applet class. TRUE
55. The stop() method is called when a user moves to another Web page. FALSE
Subjective Qustions :-
Qus. - 01 : Explain the life cycle of an applet.
Ans:-
The life cycle of an applet consists of four methods : init( ), start( ), stop( ) and destroy( )
init( ) :- This method is used to initialize an applet. It is called when an applet is loaded in the computer memory for the first time. It is called only once.
start( ) :- This method is automatically called after the init( ) method is invoked. It is also called whenever user restarts a process on the applet page. With the start( ) method the applet comes in the running state. In this state the paint( ) method is called.
stop( ) :- This method is used to stop an applet. It is called every time an applet is stopped or the browser is minimized.
destroy( ) :- This method is used to destroy an applet. It is called when an user moves to another web page.
The life cycle of an applet consists of four methods : init( ), start( ), stop( ) and destroy( )
init( ) :- This method is used to initialize an applet. It is called when an applet is loaded in the computer memory for the first time. It is called only once.
start( ) :- This method is automatically called after the init( ) method is invoked. It is also called whenever user restarts a process on the applet page. With the start( ) method the applet comes in the running state. In this state the paint( ) method is called.
stop( ) :- This method is used to stop an applet. It is called every time an applet is stopped or the browser is minimized.
destroy( ) :- This method is used to destroy an applet. It is called when an user moves to another web page.
Qus. - 02 : Explain the different HTML tags.
Ans :-
HTML page have some basic tags which are as follows :
1. <HTML> :- It is a mother tag of html web page.
2. <TITLE> :- It is used to specify the document title.
3. <BODY> :- It consists of the content of the HTML document.
4. <APPLET> :- It is used to specify the applet class.
Ans :-
HTML page have some basic tags which are as follows :
1. <HTML> :- It is a mother tag of html web page.
2. <TITLE> :- It is used to specify the document title.
3. <BODY> :- It consists of the content of the HTML document.
4. <APPLET> :- It is used to specify the applet class.
Qus. - 03 : What is AWT ?
Ans. :- AWT stands for Abstract Window Toolkit. It is a standard Java toolkit that provide classes and methods to create Graphical User Interface.
Qus. - 04 : Why is it important to inherit the standard Applet and Graphics classes ?
Ans. :- To create an applet program in Java, it is important and necessary to inherit the standard Applet and Graphics classes.
Qus. - 05 : What is the use of the paint() and drawString() methods ?
Ans. :-
paint( ) :- This method is used to draw anything on the display area of an applet.
drawString() :- This method is used to display strings on an applet's display area.
paint( ) :- This method is used to draw anything on the display area of an applet.
drawString() :- This method is used to display strings on an applet's display area.
Lab Question :
Qus. - 01 : Write a program to display name and age of a student using applets.
Ans:-
JAVA FILE :-
JAVA FILE :-
import java.applet.Applet;
import java.awt.Graphics;
public class Display extends Applet
{
public void paint(Graphics g)
{
g.drawString("Student Name : Amit Kumar",20,20);
g.drawString("Roll Number : 001",20,30);
}
}
HTML FILE :-
import java.awt.Graphics;
public class Display extends Applet
{
public void paint(Graphics g)
{
g.drawString("Student Name : Amit Kumar",20,20);
g.drawString("Roll Number : 001",20,30);
}
}
HTML FILE :-
<html>
<title>Studnet Details</title>
<body>
<applet code="Display.class" width=200 height=300>
</applet>
</body>
</html>
<title>Studnet Details</title>
<body>
<applet code="Display.class" width=200 height=300>
</applet>
</body>
</html>
Qus. - 02 : Write a program to display marks of a student using applets.
Ans :-
Ans :-
JAVA FILE :-
import java.applet.Applet;
import java.awt.Graphics;
public class Marks extends Applet
{
public void paint(Graphics g)
{
g.drawString("Student Marks=60.00",20,20);
}
}
HTML FILE :-
import java.awt.Graphics;
public class Marks extends Applet
{
public void paint(Graphics g)
{
g.drawString("Student Marks=60.00",20,20);
}
}
HTML FILE :-
<html>
<title>Studnet Details</title>
<body>
<applet code="Marks.class" width=200 height=300>
</applet>
</body>
</html>
<title>Studnet Details</title>
<body>
<applet code="Marks.class" width=200 height=300>
</applet>
</body>
</html>
Qus. - 03 : Write a program to display the average of five subjects and total marks using applets.
Ans. :-
0 comments:
Post a Comment