华恩JAVA班第13天
一、构造代码块：
public class Test { public static void main(String[] args) { Person A = new Person(); Person B = newPerson("小李"); System.out.println(A.coutry); System.out.println(B.coutry); } } class Person{ String name; String coutry; Person(){ System.out.println("我是无参构造方法"); } Person(String name){ this.name = name; System.out.println("我是有参构造方法"); } { coutry = "中国"; } }
二、构造方法之间的调用
public class Test{ public static void main(String[] args){ Student S = newStudent("zjj"); Student B = newStudent("zxc",15); } } class Student{ String name; int age; Student(){ System.out.println("无参构造方法"); } Student(String name){ this(); this.name = name; System.out.println("abcd"); } Student(String name,int age){ this(name); this.age = age; } }
