Java 类图描述（时序图）

范例:工厂模式

interface Fruit {
	public void eat();
}

class Apple implements Fruit {
	@Override
	public void eat() {
		System.out.println("吃苹果.....");
	}
}

class Factory {
	public static Fruit getInstance() {
		return new Apple();
	}
}

public class Test {
	public static void main(String[] args) {
		Fruit f = Factory.getInstance();
		f.eat();
	}
}