문제
네트워크를 바탕으로 리모컨으로 제어되는 TV 프로그램입니다 이를 해결하는 프로그램의 다음 실행상태에 대해 빈칸을 채우세요
프로그램의 실행순서 및 실행상태
①
②
1 public static void main( String[] args ) {
3 new TVPanel( imagePath );
T1b public TVPanel( final String imgPath ) {
T1e }
③
2 RemoteControl appliance =
④
5 new RemoteControlNetwork( appliance, serverIP );
RN2b public RemoteControlNetwork( RemoteControl appliance, String serverIP ) {
RN21 super( appliance );
R3b public RemoteControllerPanel( RemoteControl appliance ) {
R3e }
RN22 connectAsClient( serverIP, appliance.getClass().getSimpleName() );
RN3b public void connectAsClient( String serverIP, String applianceName ) {
RN32 new Network();
N1b public Network() {
N1e }
RN31 network =
RN33 network.connectAsClient( serverIP, this );
N3b public void connectAsClient( String serverIP, Runnable obj ) {
N32 new Socket( serverIP, serverPort );
E001 // [클라이언트]에서 접속 요청하면 [서버]에서 네트워크 연결 초기화
⑤
N31 socket =
N33 connectInOut( obj );
N4b public void connectInOut( Runnable obj ) {
N41 waitForCounterpart.start();
RN5b public void run(){
RN52 network.read() )
N5b public String read() {
N52 in.readLine();
E002 // 네트워크에 상대편 데이터가 도착할 때까지 계속 대기
E003 // (수신전용스레드와 별개로) 메인 스레드 N41 이후 실행중
N4e }
N3e }
RN3e }
RN2e }
4 RemoteControlNetwork panel =
6 }
E004 // 이벤트가 발생할 때까지 계속 대기
E005 // 서버에서 보낸 데이터([RMTC] [리모컨] POWER) 도착
⑥
⑦
N51 return
N5e }
RN51 for ( String message = null; ( message =
RN53 appliance.clickPower();
T2b public void clickPower() {
T2e }
⑧
RN58 }
RN52 network.read() )
N5b public String read() {
N52 in.readLine();
E002 // 네트워크에 상대편 데이터가 도착할 때까지 계속 대기
E006 // 서버에서 보낸 데이터([RMTC] [리모컨] RIGHT) 도착
⑨
N51 return
N5e }
RN51 for ( String message = null; ( message =
RN57 appliance.clickRight();
T6b public void clickRight() {
T6e }
⑩
RN58 }
RN52 network.read() )
N5b public String read() {
N52 in.readLine();
E002 // 네트워크에 상대편 데이터가 도착할 때까지 계속 대기
E007 // 프로그램 종료버튼(우측상단 X) 클릭
⑪
⑫
Wb public void windowClosing( WindowEvent event ) {
W1 panel.close();
RN6b public void close() {
RN61 network.close();
N7b public void close() {
N7e }
RN6e }
We }
E008 // 메인스레드와 수신전용스레드가 모두 종료하여 프로그램 종료
⑬
프로그램 코드
E001 // [클라이언트]에서 접속 요청하면 [서버]에서 네트워크 연결 초기화
E002 // 네트워크에 상대편 데이터가 도착할 때까지 계속 대기
E003 // (수신전용스레드와 별개로) 메인 스레드 N41 이후 실행중
E004 // 이벤트가 발생할 때까지 계속 대기
E005 // 서버에서 보낸 데이터([RMTC] [리모컨] POWER) 도착
E006 // 서버에서 보낸 데이터([RMTC] [리모컨] RIGHT) 도착
E007 // 프로그램 종료버튼(우측상단 X) 클릭
E008 // 메인스레드와 수신전용스레드가 모두 종료하여 프로그램 종료
import javax.swing.*;
import java.awt.event.*;
import remoteControl.*;
public class RemoteControlTV
{
1 public static void main( String[] args ) {
final String imagePath = "C:\\Users\\user\\Downloads\\JAVA-main\\src\\remoteControl\\image\\";
String serverIP = "localhost";
2 RemoteControl appliance =
3 new TVPanel( imagePath );
4 RemoteControlNetwork panel =
5 new RemoteControlNetwork( appliance, serverIP );
JFrame frame = new JFrame( "TV(클라이언트)" );
frame.getContentPane().add( (JPanel)appliance );
frame.addWindowListener( new WindowAdapter() {
Wb public void windowClosing( WindowEvent event ) {
W1 panel.close();
We }
} );
frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
frame.pack();
frame.setVisible( true );
6 }
}
package remoteControl;
import java.awt.event.ActionEvent;
import network.Network;
public class RemoteControlNetwork extends RemoteControllerPanel implements Runnable
{
private Network network;
private String id;
private final String header = "[RMTC] ";
RN1b public RemoteControlNetwork( String imgPath, String serverIP ) {
RN11 super( imgPath );
RN12 connectAsClient( serverIP, this.getClass().getSimpleName() );
RN1e }
RN2b public RemoteControlNetwork( RemoteControl appliance, String serverIP ) {
RN21 super( appliance );
RN22 connectAsClient( serverIP, appliance.getClass().getSimpleName() );
RN2e }
RN3b public void connectAsClient( String serverIP, String applianceName ) {
id = "[" + applianceName +"]";
RN31 network =
RN32 new Network();
RN33 network.connectAsClient( serverIP, this );
RN3e }
@Override
RN4b public void actionPerformed( ActionEvent event ) {
String message = "";
if ( event.getSource() == button[POWER] )
message = header + "POWER";
else if ( event.getSource() == button[UP] )
message = header + "UP";
else if ( event.getSource() == button[DOWN] )
message = header + "DOWN";
else if ( event.getSource() == button[LEFT] )
message = header + "LEFT";
else if ( event.getSource() == button[RIGHT] )
message = header + "RIGHT";
RN41 network.write( message );
RN4e }
@Override
RN5b public void run(){
RN51 for ( String message = null; ( message =
RN52 network.read() )
!= null; ) {
if ( !message.contains( header ) )
continue;
else if ( message.contains( "POWER" ) && ( appliance != null ) )
RN53 appliance.clickPower();
else if ( message.contains( "UP" ) && ( appliance != null ) )
RN54 appliance.clickUp();
else if ( message.contains( "DOWN" ) && ( appliance != null ) )
RN55 appliance.clickDown();
else if ( message.contains( "LEFT" ) && ( appliance != null ) )
RN56 appliance.clickLeft();
else if ( message.contains( "RIGHT" ) && ( appliance != null ) )
RN57 appliance.clickRight();
RN58 }
RN5e }
RN6b public void close() {
network.write( header + id + " 네트워크 연결 종료" );
RN61 network.close();
RN6e }
}
package network;
import java.io.*;
import java.net.*;
public class Network
{
public static final int serverPort = 7700;
protected ServerSocket serverSocket;
protected Socket socket;
private BufferedReader in;
private PrintWriter out;
private Thread waitForCounterpart;
N1b public Network() {
serverSocket = null;
socket = null;
in = null;
out = null;
waitForCounterpart = null;
N1e }
N2b public void connectAsServer( Runnable obj ) {
try {
serverSocket = new ServerSocket( serverPort );
N21 socket =
N22 serverSocket.accept();
N23 connectInOut( obj );
} catch ( Exception e ) {
e.printStackTrace();
}
N2e }
N3b public void connectAsClient( String serverIP, Runnable obj ) {
try {
N31 socket =
N32 new Socket( serverIP, serverPort );
N33 connectInOut( obj );
} catch ( Exception e ) {
e.printStackTrace();
}
N3e }
N4b public void connectInOut( Runnable obj ) {
try {
in = new BufferedReader( new InputStreamReader( socket.getInputStream() ));
out = new PrintWriter( socket.getOutputStream(), true );
waitForCounterpart = new Thread( obj );
N41 waitForCounterpart.start();
} catch ( Exception e ) {
e.printStackTrace();
}
N4e }
N5b public String read() {
try {
if ( this.isConnecting() == true )
N51 return
N52 in.readLine();
} catch ( Exception e ) {
e.printStackTrace();
}
return null;
N5e }
N6b public void write( String data ) {
try {
if ( this.isConnecting() == true )
N61 out.println( data );
} catch ( Exception e ) {
e.printStackTrace();
}
N6e }
public boolean isConnecting() {
if ( ( socket != null )
&& ( in != null )
&& ( out != null )
&& ( waitForCounterpart != null )
&& ( waitForCounterpart.getState() != Thread.State.TERMINATED ) )
return true;
else
return false;
}
N7b public void close() {
try {
if ( waitForCounterpart != null ) {
waitForCounterpart.interrupt();
waitForCounterpart = null;
}
if ( in != null ) {
in.close();
in=null;
}
if ( out != null ) {
out.flush();
out.close();
out = null;
}
if ( socket != null ) {
socket.close();
socket = null;
}
if ( serverSocket != null ) {
serverSocket.close();
serverSocket = null;
}
} catch ( Exception e ) {
e.printStackTrace();
}
N7e }
}
package remoteControl;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class RemoteControllerPanel extends JPanel implements ActionListener
{
protected JButton[] button;
public final static int POWER = 0, UP = 1, DOWN = 2, LEFT = 3, RIGHT = 4;
protected RemoteControl appliance;
R1b public RemoteControllerPanel( String imgPath ) {
this.appliance = null;
final String[] strButton = { "power.gif", "up.gif", "down.gif", "left.gif", "right.gif" };
button = new JButton[strButton.length];
for ( int i = 0; i < strButton.length; i++ ) {
button[i] = new JButton( new ImageIcon( new ImageIcon( imgPath + strButton[i] ).getImage().getScaledInstance( 30, 30, Image.SCALE_SMOOTH ) ) );
button[i].addActionListener( this );
}
this.setPreferredSize( new Dimension( 240, 120 ) );
this.setLayout( new BorderLayout() );
this.add( button[POWER], BorderLayout.CENTER );
this.add( button[UP ], BorderLayout.NORTH );
this.add( button[DOWN ], BorderLayout.SOUTH );
this.add( button[LEFT ], BorderLayout.WEST );
this.add( button[RIGHT], BorderLayout.EAST );
R1e }
R2b public RemoteControllerPanel( String imgPath, RemoteControl appliance ) {
this( imgPath );
this.appliance = appliance;
R2e }
R3b public RemoteControllerPanel( RemoteControl appliance ) {
this.appliance = appliance;
R3e }
@Override
R4b public void actionPerformed( ActionEvent event ) {
if ( ( event.getSource() == button[POWER] ) && ( appliance != null ) )
appliance.clickPower();
else if ( ( event.getSource() == button[UP] ) && ( appliance != null ) )
appliance.clickUp();
else if ( ( event.getSource() == button[DOWN] ) && ( appliance != null ) )
appliance.clickDown();
else if ( ( event.getSource() == button[LEFT] ) && ( appliance != null ) )
appliance.clickLeft();
else if ( ( event.getSource() == button[RIGHT] ) && ( appliance != null ) )
appliance.clickRight();
R4e }
}
package remoteControl;
import java.awt.*;
import javax.swing.*;
public class TVPanel extends JPanel implements RemoteControl
{
private boolean power;
private int channel, volume;
private ImageIcon[] imgChannel, imgVolume;
private JLabel lblChannel, lblVolume;
T1b public TVPanel( final String imgPath ) {
final String[] channelFile = { "EBS.gif", "SBS.gif", "KBS.gif", "MBC.gif", "blank.gif" };
imgChannel = new ImageIcon[channelFile.length];
for ( int i = 0; i < channelFile.length; i++ ) {
imgChannel[i] = new ImageIcon( new ImageIcon( imgPath + channelFile[i] ).getImage().getScaledInstance( 250, 120, Image.SCALE_SMOOTH ) );
}
final String[] volumeFile = { "volume0.gif", "volume1.gif", "volume2.gif", "volume3.gif" };
imgVolume = new ImageIcon[volumeFile.length];
for ( int i = 0; i < volumeFile.length; i++ ) {
imgVolume[i] = new ImageIcon( new ImageIcon( imgPath + volumeFile[i] ).getImage().getScaledInstance( 80, 120, Image.SCALE_SMOOTH ) );
}
power = OFF;
channel = imgChannel.length - 1;
volume = 0;
lblChannel = new JLabel( imgChannel[channel] );
lblVolume = new JLabel( imgVolume[volume] );
add( lblChannel );
add( lblVolume );
T1e }
@Override
T2b public void clickPower() {
if( power == OFF ) {
power = ON;
channel = 0;
volume = 1;
lblChannel.setIcon( imgChannel[channel] );
lblVolume.setIcon( imgVolume[volume] );
}
else {
power = OFF;
channel = imgChannel.length - 1;
volume = 0;
lblChannel.setIcon( imgChannel[channel] );
lblVolume.setIcon( imgVolume[volume] );
}
T2e }
@Override
public void clickUp() {
if( power == ON ) {
channel = ( channel + 1 ) % ( imgChannel.length - 1 );
lblChannel.setIcon( imgChannel[channel] );
}
}
@Override
public void clickDown() {
if( power == ON ) {
channel = ( channel + ( imgChannel.length - 2 ) ) % ( imgChannel.length - 1 );
lblChannel.setIcon( imgChannel[channel] );
}
}
@Override
public void clickLeft() {
if( power == ON ) {
volume = ( volume + ( imgVolume.length - 1 ) ) % imgVolume.length;
lblVolume.setIcon( imgVolume[volume] );
}
}
@Override
T6b public void clickRight() {
if( power == ON ) {
volume = ( volume + 1 ) % imgVolume.length;
lblVolume.setIcon( imgVolume[volume] );
}
T6e }
}
package remoteControl;
public interface RemoteControl
{
boolean ON = true, OFF = false;
void clickPower();
void clickUp();
void clickDown();
void clickLeft();
void clickRight();
}