[Java Design Pattern_3]Template Method 샘플 코드2

@ AbstractClass (추상 클래스)  

 - 이 클래스에서는 탬플릿 메소드를 구현(정의)합니다.


package Template;

public abstract class AbstractDisplay {
public final void decorate(){
   char topChar = getTopCharacter();
   char leftChar = getLeftCharacter();
   String str = getString();
   char rightChar = getRightCharacter();
   char bottomChar = getBottomCharacter();

   for(int i=0; i<str.length() + 2; i++){
       System.out.print(topChar);
   }
   System.out.println();

   System.out.print(leftChar);
   if (isUpperCase()){
       System.out.print(str.toUpperCase());
   }else{
       System.out.print(str.toLowerCase());
   }

   System.out.print(rightChar);

   System.out.println();
   for(int i=0; i<str.length() + 2; i++){
   System.out.print(bottomChar);
   }
}

protected boolean isUpperCase() {
return true;
}

protected abstract char getTopCharacter();

protected abstract char getLeftCharacter();

protected abstract String getString();

protected abstract char getRightCharacter();

protected abstract char getBottomCharacter();
}

@ ConcreateClass(구현 클래스)

-  추상 클래스에서 정의된 메소드를 구체적으로 구현 합니다.

package Template;

public class StringDisplay extends AbstractDisplay {

    @Override

    protected char getBottomCharacter() {

        return '#';

    }

    @Override

    protected char getLeftCharacter() {

        return '(';

    }

    @Override

    protected char getRightCharacter() {

        return ')';

    }

    @Override

    protected String getString() {

        return "sgdata";

    }

    @Override

    protected char getTopCharacter() {

        return '#';

    }

}

@ Main Class

package Template;

public class Main {

public static void main(String[] args) {

    AbstractDisplay decorator = new StringDisplay();

        decorator.decorate();

    }

}