设计模式----适配器模式

1.适配器模式

public interface MediaPlayer {
void player(String mediaType);
}

interface AdviceMediaPlayer {
void playerMp4();
void playerMp3();
}

class Mp4MediaPlayer implements AdviceMediaPlayer{

@Override
public void playerMp4() {
    System.out.println("--playerMp4-------");
}

@Override
public void playerMp3() {
}

}

class Mp3MediaPlayer implements AdviceMediaPlayer{

@Override
public void playerMp4() {
}

@Override
public void playerMp3() {
    System.out.println("---playerMp3------");
}

}

class ApaptMediaPlayer implements MediaPlayer{
AdviceMediaPlayer adviceMediaPlayer;

ApaptMediaPlayer(String mediaType){
    if ("mp3".equalsIgnoreCase(mediaType)) {
        adviceMediaPlayer = new Mp3MediaPlayer();
    }
    if ("mp4".equalsIgnoreCase(mediaType)) {
        adviceMediaPlayer = new Mp4MediaPlayer();
    }
}

@Override
public void player(String mediaType) {
    if ("mp3".equalsIgnoreCase(mediaType)) {
        adviceMediaPlayer.playerMp3();
    }
    if ("mp4".equalsIgnoreCase(mediaType)) {
        adviceMediaPlayer.playerMp3();
    }
}

}

class AutoMediaPlayer implements MediaPlayer{
ApaptMediaPlayer apaptMediaPlayer;
@Override
public void player(String mediaType) {
apaptMediaPlayer.player(mediaType);
}
}

2.适配器模式（Adapter Pattern）是作为两个不兼容的接口之间的桥梁，将一个接口匹配为另外一个接口功能