Question $2(10)$

Provide your answer by selecting Question number $2$ and selecting the answer under the corresponding EC sub question number.

$(2\mathrm{.}1)$ What is the main advantage of using the MVC model in Java's Swing components?

A$.$ It simplifies event handling.

B$.$ It combines the view and controller into a single class.

$-$C$.$ It separates the state, appearance, and behavior of a component.

D$.$ It eliminates the need for platform$-$specific code.

$(2\mathrm{.}2)$ Which class is the root of all Swing components?

A$.$ java.awt.Component

$-$B$.$ javax.swing.JComponent

C$.$ java.awt.Container

D$.$ javax.swing.SwingComponent

$(2\mathrm{.}3)$ How is platform independence achieved in Swing components?

$-$ A$.$ By using native code for rendering components

B$.$ By using Java to render all components

C$.$ By utilizing different peer models for each platform

D$.$ By relying on the operating system for event handling

$(2\mathrm{.}4)$ What does the term "heavyweight component" refer to in Java's GUI programming?

A$.$ Components rendered entirely in Java

B$.$ Components that rely on native code for rendering

C$.$ Components that are resource$-$intensive

D$.$ Components that are independent of the operating system

$(2\mathrm{.}5)$ Which method is invoked when an action is performed in Java's event model?

$-$ A$.$ actionPerformed$()$

B$.$ handleAction$()$

C$.$ executeAction$()$

D$.$ performAction$()$

$(2\mathrm{.}6)$ What is the purpose of the FileReader class?

A$.$ To read binary data from a file

$-$ B$.$ To read character data from a file

C$.$ To write binary data to a file

D$.$ To write character data to a file

$(2\mathrm{.}7)$ Which method in the File class checks whether a file is writeable?

A$.$ isWriteable$()$

$.$B$.$ canWrite$()$

C$.$ writeable$()$

D$.$ exists$()$

$(2\mathrm{.}8)$ What is a primary feature of Java's PrintWriter class?

A$.$ It supports internationalized I$/$O$.$

B$.$ It writes binary data as text.

C$.$ It reads binary data from files.

$-$D$.$ It writes data without buffering.

$(2\mathrm{.}9)$ Which class in Java's I$/$O stream hierarchy is responsible for writing character data to

files?

A$.$ FileOutputStream

B$.$ BufferedOutputStream

$-$C$.$ FileWriter

D$.$ DataOutputStream

$(2\mathrm{.}10)$ What does the flush$()$ method do when working with buffered streams?