Create a nested inner class that implements the ItemListener interface. Create a

Question

       Create a nested inner class that implements the ItemListener interface.
       Create an object of the nested inner class as the event handler object.
       Invoke the addItemListener method on button1 to register the event handler object with the event source.
       All of the above.

       g.drawElipse(300, 350, 200, 100);
       g.drawOval(400, 400, 100, 50);
       g.drawElipse(400, 400, 200, 100);
       g.drawOval(300, 350, 200, 100);

       20 pixels right and 40 pixels below the upper left corner of the display.
       40 pixels right and 20 pixels below the upper left corner of the display.
       20 pixels left and 40 pixels below the upper right corner of the display.
       40 pixels left and 20 pixels below the upper right corner of the display.

       set the color to orange on the graphics object, and then use the fillRect method to draw the rectangle.
       use the fillRect method to draw the rectangle, and then set the color to orange on the graphics object.
       set the color to orange on the graphics object, and then use the drawRect method to draw the rectangle.
       use the drawRect method to draw the rectangle, and then set the color to orange on the graphics object.

       TimerListener
       ActionListener
       TimerEventListener
       ItemListener

       add a class that implements the methods of the KeyListener interface.
       add a class that extends KeyAdapter and override the keyTyped method.
       add a class that implements the KeyTyped interface.
       None of the above.

       code which could possibly handle an exception.
       code which could possibly throw an exception.
       code which could possibly catch an exception.
       code which is not capable of throwing an exception.

       catch an exception.
       provide a place to put code that could fail.
       release any resources acquired in the try block whether an exception occurs or not.
       execute when an object is no longer needed.

       A FileNotFoundException is always thrown.
       The file is created and the stream is then created.
       A stream is created to a dummy file.
       The JVM will ask you for another file name.

       It improves performance by buffering data before writing it to the file.
       It improves performance by buffering data read from the file.
       It adds line numbers to every line that it written.
       It adds line numbers to every line that is read.

       public class X extends Serializable { . . . }
       Serializable class X { . . . }
       public class X implements Serializable { . . . }
       All of the above.

       generated by running the Java compiler.
       written by Java code developers.
       generated by running the Javadoc tool.
       None of the above.

       The javac command
       The Javadoc command
       The jar command
       None of the above.

(TCO 4) In order to handle an event from a JRadioButton object button1, what does a programmer need to do? (Points : 6)

Explanation / Answer

1.

Invoke the addItemListener method on button1 to register the event handler object with the event source

While adding the Jbutton

you must add listener The object must be registered

2.

g.drawOval(300, 350, 200, 100);

With the given question this option is only possible

3.

20 pixels right and 40 pixels below the upper left corner of the display

It adds a graphical object to the canvas

4.

set the color to orange on the graphics object, and then use the fillRect method to draw the rectangle

You can use this option for drawing a rectangle

5.

TimerListener

It will implement TimerListener

6.

add a class that implements the methods of the KeyListener interface.

7.

code which could possibly throw an exception

If an exception is thrown then only this catch and try block will execute

8.

The name of catch block’s exception parameter

That was the meaning

9.

catch an exception

If an exception is thrown it has to catch after try

10.

A FileNotFoundException is always thrown

11.

It adds line numbers to every line that it written

12.

public class X extends Serializable { . . . }

13.

generated by running the Javadoc tool

This html will be running at the background

14.

The class level

First it will implement in this level then it will go to method

15.

The jar command

This command is used to bundle a group

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