package constructorCleanup;

public class Flower {

int petalCount = 0;

String s = "initial value";

Flower(int petals) {

petalCount = petals;

System.out.println("Constructor w/ int arg only, petalCount = " + petalCount);

}

Flower(String ss) {

s = ss;

System.out.println("Constructor w/ String arg only, s = " + s);

}

Flower(String s, int petals) {

// this呼叫本身符合引數型態建構子

this(petals);

// this呼叫本身物件 將資料成員s指定成引數s

this.s = s;

System.out.println("String & int args");

}

Flower() {

this("hi", 47);

System.out.println("Default constructor ");

}

void printPetalCount() {

System.out.println("PetalCount = " + petalCount + " s = " + s);

}

public static void main(String[] args) {

Flower x = new Flower();

x.printPetalCount();

}

}