UML
실제 적용 UML
EXAMPLE1
public class LowerCaseInputStream extends FilterInputStream {
protected LowerCaseInputStream(InputStream in) {
super(in);
}
@Override
public int read() throws IOException {
int c = super.read();
return (c == -1 ? c : Character.toLowerCase((char)c));
}
@Override
public int read(byte[] b, int offset, int len) throws IOException {
int result = super.read(b, offset, len);
for (int i = offset; i < offset + result; i++) {
b[i] = (byte) Character.toLowerCase((char)b[i]);
}
return result;
}
}
public class InputTest {
public static void main(String[] args) throws IOException {
int c;
try {
InputStream in =
new LowerCaseInputStream(
new BufferedInputStream(new FileInputStream("test.txt")));
while( (c = in.read()) >= 0) {
System.out.println((char)c);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
public abstract class Beverage {
String description = "제목없음";
public String getDescription() {
return description;
}
public abstract double cost();
}
public class Espresso extends Beverage{
public Espresso() {
description = "에스프레소";
}
@Override
public double cost() {
return 1.99;
}
}
public abstract class CondimentDecorator extends Beverage{
public abstract String getDescription();
}
public class Mocha extends CondimentDecorator {
Beverage beverage;
public Mocha(Beverage beverage) {
this.beverage = beverage;
}
@Override
public String getDescription() {
return beverage.getDescription() + ", 모카";
}
@Override
public double cost() {
return beverage.cost() + 0.20;
}
}
public class StarbucksCoffee {
public static void main(String[] args) {
Beverage beverage = new Espresso();
System.out.println(beverage.getDescription() + " $ " + beverage.cost());
Beverage beverage1 = new DarkRoast();
beverage1 = new Mocha(beverage1);
beverage1 = new Mocha(beverage1);
beverage1 = new Whip(beverage1);
System.out.println(beverage1.getDescription() + "$" + beverage1.cost());
Beverage beverage2 = new HouseBlend();
beverage2 = new Mocha(beverage2);
beverage2 = new Mocha(beverage2);
beverage2 = new Whip(beverage2);
System.out.println(beverage2.getDescription() + "$" + beverage2.cost());
}
}