public class StaticInitDemo{
static int x=100;                       //ʼ̬x
static double y;
double z;
static {                               //̬ʼ
y=3.1415926;                     //ʼ̬y
}
StaticInitDemo(){                       //췽
z=y*x*x;                          //ʼʵz
}
public static void main(String args[]){
        StaticInitDemo s1=new StaticInitDemo();
        System.out.println("x= "+x);
	    System.out.println("y= "+y);
	    System.out.println("z= "+s1.z);
}
}
