Java 构造函数

package com.cwcec.test;

public class Car {
    int num;
    String color;
    public void Car()
    {
        System.out.println("成员函数：Car()");
    }
    public Car()
    {
        System.out.println("构造函数：Car()");
    }
        public Car(int num,String color)
    {
        this();         //必须处于第一行
                this.num=num;
                this.color=color;
    }

        public void run()
    {
        System.out.println(num + "," + color);
    }
}

public class Demo {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        Car car = new Car();
        car.run();
        car.Car();
    }
}

output:

构造函数：Car()

0,null

成员函数：Car()