java关键字“static”

 1 package test2;
 2 import java.lang.String;
 3 public class test2 {
 4   public static int count =0;
//相当于类内自带的变量可以直接使用无需引用
//数值只要改动就会在类内改变；
 5   public test2() {
 6       count++;
 7       System.out.println("test : "+count);
 8       //为什么都是1？
 9       //count默认值为0，每次调用构造函数都是从0开始；
10   }
11   private static int size;
12   public static void main(String[] args) {
13     test2 a = new test2();
14     test2 b = new test2();
15     String[] s = {"a","b","c"};
16     setSize(5);
17     getSize();
18     System.out.println("Size of duck is "+size+";");
19 }
20   public static void setSize(int s) {
21       size = s;
22   }
23   public static int getSize() {
24       return size;
25   }
26 }