2020-10-24

什么是接口？
接口是 Java 中最重要的概念之一，它可以被理解为一种特殊的类，不同的是接口的成员没有执行体，是由全局常量和公共的抽象方法所组成。

package com.StudyInterface;

public interface HDMI {
public void HDMIConnect();
}
package com.StudyInterface;

public interface USB {
public final static int a=10;
public abstract void connection();
}
package com.StudyInterface;

public class IPad implements USB,HDMI{
@Override
public void connection() {
System.out.println(“加载IPad的驱动”);

}
@Override
public void HDMIConnect() {
	System.out.println("加载IPad的HDMI驱动");
	
}

}
package com.StudyInterface;

public class Iphone implements USB,HDMI{
@Override
public void connection() {
System.out.println(“加载Iphone的驱动”);

}
@Override
public void HDMIConnect() {
	System.out.println("加载Iphone的HDMI驱动");
	
}

}
package com.StudyInterface;

public class Text {

public static void main(String[] args) {
	USB usb = new Iphone();
	usb.connection();
	USB usb2 = new IPad();
	HDMI hd =new IPad();
	hd.HDMIConnect();
}

}