面向对象_构造代码块

 1 public class Object_StructureCode {
 2     public static void main(String[] args) {
 3         Person p=new Person();
 4         //p.setName("libushi");
 5         //System.out.println(p.getName());
 6         Person p1=new Person("haungjianfeng");
 7         
 8         Person p2=new Person("haungjianfeng",21);
 9     }
10 }
11 class Person{
12     private int age;
13     private String name;
14     //构造代码块
15     {
16         speak();
17         cry();
18     }
19     
20     Person(){
21         //System.out.println("A:name="+name+",,age="+age);
22     }
23     Person(String name){
24         this.name =name;
25         //System.out.println("B:name="+name+",,age="+age);
26     
27     }
28     Person(String name,int age){
29         this.name =name;
30         this.age=age;
31         //System.out.println("C:name="+name+",,age="+age);
32         
33     }
34     //有了构造函数之后，也要定义set，get方法，用于日后改名字
35     public void setAge(int age){
36         if (0<age && age<130){
37             this.age = age;
38         }
39         else
40             System.out.println("feifa age");
41     }
42     
43     public int getAge(){
44         return age;
45     }
46 
47     public void setName(String name){
48         this.name = name;
49     }
50     public String getName(){
51         return name;
52     }
53     
54     
55     public void speak(){
56         System.out.println("name="+name+",,age="+age);
57         //System.out.println("name="+this.name+",,age="+this.age);
58     }
59     public void cry(){
60         System.out.println("cry.......");
61     }
62 }