java变量的区别浅析

public class A{ 
static  int xingS = 0; //类变量  
private int name = 0; //实例变量  
String id; //实例变量 
private String colorType; //实例变量  
private int size; //实例变量  
private static String depart; //类变量   f
inal String name="zwm"; //常量
}
public class B{  
public void main (String[] args){      
A son1= new A();      
A son2= new A();      
son1.xingS = 3;  // 等同于
A.xingS = 3;      
son1.name = 4 ;      
System.out.println(son2.xingS); //结果为3      
//类变量是针对所有对象的，所以son1改变xingS，son2的a也改变      
System.out.println(son2.name); //结果为0      
//实例只改变自身的，所以son1对象的name改变，不影响对象son2的name变量 
}
}