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);
}
}
时间: 2024-10-20 08:15:16