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Study_Interface_01.java
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65 lines (49 loc) · 1.16 KB
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package study;
public class Study_Interface_01 {
public abstract static class Calculator implements Calc{
@Override
public int add(int num1, int num2) {
// TODO Auto-generated method stub
return num1 + num2;
}
@Override
public int substract(int num1, int num2) {
// TODO Auto-generated method stub
return num1 - num2;
}
}
public static class CompleteCalc extends Calculator{
@Override
public int times(int num1, int num2) {
return num1* num2;
}
@Override
public int divide(int num1, int num2) {
if(num2 ==0) {
return ER;
}
else {
return num1 / num2;
}
}
public void showInfo() {
System.out.println("모두 구현했습니다.");
}
}
public static void main(String[] args) {
/*
* Calculator cal = new CompleteCalc();
*
* CompleteClac cal = new CompleteCalc();
*
* 멀쓰던 값은 다 똑같이 잘 나온다.
*/
Calc cal = new CompleteCalc();
int num1 = 10;
int num2 = 0;
System.out.println(cal.add(num1, num2));
System.out.println(cal.substract(num1, num2));
System.out.println(cal.divide(num1, num2));
System.out.println(cal.times(num1, num2));
}
}