【面向对象】《构造器（构造方法）》的代码示范

构造器的重载 

package duixiang;

public class human {
    //特性-属性-名词
    String name;
    int age;
    double height;

    //行为-方法（函数）-动词
    //定义一个运动的函数；
    public void sport(){
        System.out.println("唱跳rap，music");
    }


    //证明构造器是凭空存在的
    //构造器格式：public 类名{}
    public human() {
        System.out.printf("自动分配空的构造器，现在调用空的构造器\n");
    }
    //构造器的重载：对不同属性进行不同的赋值
    public human(int age,String name,double height){
        this.age = age ;
        this.name = name ;
        this.height = height ;
    }
   }

构造器的调用

package duixiang;

public class 构造器的调用 {
    public static void main(String[] args) {
        human p = new human();//human()空的构造方法，new构造器的标签

        human p1 = new human(18,"蔡徐坤",180);
        //System.out.println(p1.age,p1.name,p1.height);
        System.out.println( p1.age + ", " + p1.name + ", " + p1.height);

        human p2 = new human(18,"小黑子",185);
       //System.out.println(p2.age,p2.name,p2.height);
        System.out.println(p2.age + ", " + p2.name + ", " + p2.height);
    }
}