the construction method (构造方法)

Posted 2020-07-08

the methon of automatically(自动) executing（执行） in class instance(类实例化) is called the construction method

 

its name is the same as the name of class

 

 

 public class Dog{
    String name;
    int age;
  
    // 构造方法，没有返回值
    Dog(String name1, int age1){
        name = name1;
        age = age1;
        System.out.println("感谢主人领养了我");
    }
  
    // 普通方法，必须有返回值
    void bark(){
        System.out.println("汪汪，不要过来");
    }
 
    void hungry(){
        System.out.println("主人，我饿了");
    }
  
    public static void main(String arg[]){
        // 创建对象时传递的参数要与构造方法参数列表对应
        Dog myDog = new Dog("花花", 3);
    }
}