class variables{
       static   int a=10;        //
       int b=100;              //ʵ
       void fun(){
               System.out.println("a="+a);
               System.out.println("b="+b);
               int a=20;              //ֲ뾲̬ͬ
               int b=200;             //ֲʵͬ
               int c=1000;            //ֲ
               System.out.println("a="+a);
               System.out.println("b="+b);
               System.out.println("c="+c);
}
}
class varArea{
public static void main(String args[]){
	   variables var1=new variables();
	   var1.fun();
}
}
