Ex9_3 코드
<![CDATA[
package org.javaro.lecture;
public class Ex9_3 {
public static void main(String[] args) {
System.out.println("조병수-20191114-인터페이스");
KHello4 khello1 = new KHello4();
khello1.goodMorning3();
khello1.goodNight3();
khello1.goodAfternoon3();
}
}
interface GoodMorning3{
abstract void goodMorning3();
}
interface GoodNight3{
abstract void goodNight3();
}
class KHello3 implements GoodMorning3,GoodNight3{
public void goodMorning3() {
System.out.println("좋은 아침");
}
public void goodNight3() {
System.out.println("좋은 저녁");
}
}
interface KSay extends GoodMorning3,GoodNight3{
abstract void goodAfternoon3();
}
class KHello4 extends KHello3 implements KSay{
public void goodAfternoon3() {
System.out.println("좋은 점심");
}
}
]]>
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