Name card(interface)

Main class

public class MainClass {
	public static void main(String[] args) {
	// 8.
	NameCard namecard = new NameCard("홍길동", "123-4567", "hgd@naver.com");
	
	// 9.
	namecard.setPrintCard(new PrintNameCard());
	namecard.print();
	
	// 11.
	namecard.setPrintCard(new PrintNamePhoneCard());
	namecard.print();
	}
}

 

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Print interface

public interface PrintInterface {
	
	// 3.
	public void print(NameCard nc);
}

 

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Name card

public class NameCard {
	
	// 1.
	String name;
	String phone;
	String email;
	
	// 5. interface
	PrintInterface printInterface;
	
	// 2.
	public NameCard(String name, String phone, String email) {

		this.name = name;
		this.phone = phone;
		this.email = email;
	}
	
	// 6.
	public void setPrintCard(PrintInterface p) {
		printInterface = p;
	}
	
	// 7.
	public void print() {
		printInterface.print(this);
	}
}

 

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Name card

public class PrintNameCard implements PrintInterface {
	
	// 4.
	@Override
	public void print(NameCard nc) {
		System.out.println("이름: " + nc.name);
	}	
}

 

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Name card

public class PrintNamePhoneCard implements PrintInterface {
	
	// 10.
	@Override
	public void print(NameCard nc) {
		System.out.println("이름: " + nc.name);
		System.out.println("전화번호: " + nc.phone);	
	}
}