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| package Java0323.Lecture12.inter02;
public interface TV {
/*public static final*/ int MAX_VOLUME_SIZE = 50;
/*public static final*/ int MIN_VOLUME_SIZE = 0;
/*public abstract*/ void powerOn();
/*public abstract*/ void powerOff();
/*public abstract*/ void channelUp();
/*public abstract*/ void channelDown();
/*public abstract*/ void soundUp();
/*public abstract*/ void soundDown();
/*public abstract*/ void mute();
default void copyright() {
System.out.println("모든 기술은 TV협회에 귀속됩니다.");
}
}
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| package Java0323.Lecture12.inter02;
public class UserMain {
public static void main(String[] args) {
TV tv = new SamsungTV();
tv.powerOn();
tv.channelUp();
tv.channelDown();
tv.soundUp();
tv.soundDown();
tv.mute();
tv.mute();
tv.soundUp();
tv.powerOff();
tv.copyright();
System.out.println("=========================");
/*
TV tv = new LGTV();
tv.powerOn();
tv.channelUp();
tv.channelDown();
tv.soundUp();
tv.soundDown();
tv.powerOff();
*/
}
}
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| package Java0323.Lecture12.inter02;
public class SamsungTV implements TV{
private String modeName;
private boolean power;
private int volumeSize;
private int channelNo;
private boolean muteToggle;
private int currentVolumeSize;
public SamsungTV() {
System.out.println("삼성TV 구매완료...");
modeName = "삼성TV";
power = false;
volumeSize = 10;
channelNo = 3;
muteToggle = false;
currentVolumeSize = volumeSize;
}
@Override
public void powerOn() {
power = true;
System.out.println("전원을 켭니다.");
info();
}
@Override
public void powerOff() {
power = false;
System.out.println("전원을 끕니다.");
}
@Override
public void channelUp() {
channelNo++;
if(channelNo == 100) {
channelNo = 1;
}
System.out.println("채널을 올립니다.");
info();
}
@Override
public void channelDown() {
channelNo--;
if(channelNo == 0) {
channelNo = 100;
}
System.out.println("채널을 내립니다.");
info();
}
@Override
public void soundUp() {
System.out.println("볼륨을 올립니다.");
if(muteToggle) {
volumeSize = currentVolumeSize;
muteToggle = false;
}
if(volumeSize < TV.MAX_VOLUME_SIZE) {
volumeSize++;
}
info();
}
@Override
public void soundDown() {
System.out.println("볼륨을 내립니다.");
if(volumeSize > TV.MIN_VOLUME_SIZE) {
volumeSize--;
}
info();
}
@Override
public void mute() {
if(muteToggle==true) { // muteToggle이라는 문자는 참인데 muteToggle은 거짓 값을 가지고있다.
System.out.println("음소거 해제");
volumeSize = currentVolumeSize;
} else {
System.out.println("음소거 중...");
volumeSize = TV.MIN_VOLUME_SIZE;
}
muteToggle = !muteToggle;
// System.out.println(muteToggle);
// volumeSize = TV.MIN_VOLUME_SIZE;
info();
}
private void info() { // 내부정보로만 돌리는 핵심기술일때 private 설정가능
System.out.println("채널번호 : " + channelNo + ", 음량크기 : " + volumeSize);
}
}
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| package Java0323.Lecture12.inter02;
public class LGTV implements TV {
public LGTV() {
System.out.println("LGTV 구매완료...");
}
@Override
public void powerOn() {
System.out.println("TV전원 ON");
}
@Override
public void powerOff() {
System.out.println("TV전원 OFF");
}
@Override
public void channelUp() {
System.out.println("Channel Up...");
}
@Override
public void channelDown() {
System.out.println("Channel Down...");
}
@Override
public void soundUp() {
System.out.println("Sound Up...");
}
@Override
public void soundDown() {
System.out.println("Sound Down...");
}
@Override
public void mute() {
System.out.println("MUTE");
}
}
|
