// tests class variable initialization and reference

class Class02 {

public int w;

public int x = 1;

public int y, z = 2;

public int a = 3, b;

public static void main(String[] args) {

Class02 c = new Class02();

System.out.println(c.w);

System.out.println(c.x);

System.out.println(c.y);

System.out.println(c.z);

System.out.println(c.a);

System.out.println(c.b);

c.b++;

System.out.println(c.b);

}

}